Abstract:
Fresh water rinsing of a boat hull of a boat occurs to remove contamination from the boat hull during each raising operation of the boat utilizing a boat lift. The contamination coming primarily from a body of water in which the boat operate. The contamination, if left on the boat hull while positioned on the boat lift and out of the body of water, will have an adverse effect upon the condition of the boat hull. A series of intermittent burst of fresh water from each fresh water discharge occur through a respective angle of discharge in a respective repetitive cycle of passes during the raising operation of the boat lift. Each fresh water discharge is generally fixedly positioned relative to a fixed portion of the boat lift. Rinsing of the boat cradle of the boat lift also occurs to remove contamination therefrom to reduce adverse effects to the cradle.

Description:
BACKGROUND 
   1. Field of the Invention 
   Generally the invention relates to devices to rinse a hull of a boat when positioned on a boat lift during a removal of the boat from a body of water. More specifically the invention relates to such rinsing utilizing fresh water to remove the water of the body of water, and other materials, from the boat hull to prevent accumulation of undesirable materials on the hull of the boat. 
   2. Description of the Prior Art 
   It is understood that hulls of boats will benefit from being cleaned of contamination from exposure to water of a body of water subsequent to removal from the body of water. Such cleaning will enhance and prolong the life cycle of the boat hull by preventing deterioration associated with leaving the contamination thereon. The term contamination as used herein refers to a very wide spectrum of materials, both organic and inorganic. Contamination may involve living matter which may attach itself to surfaces of the boat hull. Contamination may involve naturally occurring elements as well as man made, or refined, elements which may attach to the surfaces of the boat hull. 
   Leaving a boat in water for extended periods of time has detrimental effects upon the boat. Fowling of the hull may occur in both fresh water and salt water. The area of the hull at and just above the hull water line is particularly susceptible to fowling. The portion of the hull below the hull water line is also susceptible to fowling due to the inaccessible nature of this area for cleaning while the boat is in the water. 
   When contamination from the body of water, either from a fresh water body of water or from a salt water body of water, is permitted to remain on the hull of the boat following removal from the body of water the hull can suffer unnecessary deterioration over time. 
   Numerous methods exist to wash boat hulls once elevated and removed from a body of water. The most common method involves a person manually manipulating a hose to disperse fresh water for rinsing the various surfaces while walking around to gain access to the various areas of the hull of the boat. This is only practical if the person is able to completely move around the boat lift to gain access to both sides of the boat hull. Many boat lifts, particularly in residential setting, are only accessible on one side of the boat lift. Therefore, in these circumstances a less than desirable outcome is obtainable utilizing the manual manipulation rinsing method. Of course some boat lifts are accessible on both sides, such as having surrounding decking of a dock. 
   Many people who have a boat lift and a corresponding boat routinely keep their boat on the boat lift and raised out of the body of water when not actively using the boat for boating activities. Often the owner will not even leave their boat in the water overnight when not in use. It is common for such a boat to be used repetitively over a span of several days with the boat being placed on the boat lift and elevated above the body of water during inactive periods, such as overnight. 
   The removal from the body of water following each use of the boat provides an excellent opportunity to clean the hull of the boat. Unfortunately, many boaters fail to take advantage of these opportunities, at least not each and every time. This failure results in contamination being left on the hull of the boat. When the contamination is permitted to dry and harden on the hull adverse effects begin and subsequent washing often will fail to completely remove such accumulation. 
   Various devices have been proposed which wash the hulls of boats while the boat remains in the water. This class of devices, while interesting as they relate to the harm which may be experienced by boat hulls from accumulation of contaminating materials thereon, are not applicable to the present invention. Typically devices in this class of inventions rely upon rotating brushes to clean the hull of the boat under treatment while moving along and under the boat while the boat remains in the water. 
   Various devices have been proposed which wash the hulls of boats subsequent to complete removal of the boat from a body of water. Many of these devices manipulate brushes, or other objects, in combinations with an introduction of water to clean the portion of the boat hull under treatment. It has been proposed to utilize water dispersing discharges, typically in a form and velocity commonly referred to as ‘pressure cleaning’, which act alone to provide the desired cleaning of the boat hull. Typically the water dispersing discharge location(s) are mechanically moved about relative to the stationary boat hull. Often devices in this class are utilized during a transfer procedure and positioned on a piece of equipment between the body of water and a fixed storage location, such as in a multiple boat storage rack at a marina. 
   The most common variety of boat lifts which will benefit from the present invention are those which slowly transfer the boat back and forth between the elevated storage position and the lowered launch/retrieve position. While wide variation between models exist, typically such transfers are on the order of five (5) to ten (10) minutes for each lowering operation and each raising operation. Many configurations of boat lifts exist which may function with the present invention. A common type is a straddling type which has at least four (4) stationary corner posts with the boat cradle positioned therebetween and engaged by at least four (4) vertically oriented elevation manipulation members. Typically, these vertically oriented elevation manipulation members are mere cables which are secured to the boat cradle at one end and to the fixed portion of the boat lift for displacement, most commonly via a winding process, at the opposing end. Another common type is a single side rail type boat lift which has the boat cradle extending outward therefrom generally parallel to the surface of the water. Often the fixed rail portion will be angularly offset relative to perpendicular to the surface of the water. These types of boat lifts will often be installed in the absence of decking, at least on the far side of the boat lift from the shore. These types of boat lifts are typically deployed with smaller lighter boats. These types of boat lifts present unique challenges for the boater who wishes to rinse down the boat hull following use. This challenge is primarily related to the lack of ready access to the offshore side of the boat lift. Another method of lifting a boat out of the water is by a pair of davits mounted on the shore using cables attached to the bow and stern of the boat. This also leaves the offshore side of the boat unavailable for cleaning. The present invention can be easily adapted to these lifts via posts or pilings mounted in the body of water on the side of the hull away from the landside. A plurality of fresh water discharges can then be attached to the pilings with water supplied from landside together with a plurality of fresh water discharges on the landside. 
   The present invention is primarily intended to be deployed with a dedicated boat lift which is conventionally utilized to store, in an elevated dry condition, a single boat and to launch and retrieve that boat from a body of water. Various devices have been proposed to wash the boat hull, and incidentally the boat cradle of the boat lift, subsequent to full elevation of the boat lift to a storage position. These devices universally utilized mechanically features which move about at least horizontally during performance of the cleaning procedure, such as moving rotating brushes from stem to stern while dispensing water. These devices are extremely complicated in design, expensive to install and maintain and time consuming to operate. Many users do not like to leave their boating equipment unattended during operation of such mechanical devices. This includes during operation of the boat lift and during operation of the hull cleaning machinery. Therefore, when operating the known boat hull cleaning devices which operate only on fully elevated and stationary boats the user will stay during the raising of the boat from the landing position to the elevated storage position and during operation of the boat hull cleaning device. Wide variations in operating time exist, depending upon design, for operation of these conventional boat hull cleaning devices. An example of time of operation for such devices is five (5) to ten (10) minutes. Therefore, a complete conventional ‘from initial landing orientation to proper elevated and washed storage orientation’ for a boat will consume the time for the raising operation of the boat lift, typically five (5) to ten (10) minutes, and the time for the washing operation, commenced only when the raising operation is fully complete, typically another five (5) to ten (10) minutes. In the instances when a boat is only being removed for a brief period of time, such as overnight, the user will often forego the cleaning operation which leaves contaminates thereon which then have an opportunity to dry and harden on the boat hull of the boat. 
   An excellent example of the state of the art in boat hull cleaning is depicted in U.S. Pat. No. 5,445,101 issued to Leonard Koch. This reference teaches positioning of water piping, having a multiplicity of holes directed generally upward, in fixed attachment on the boat cradle below the contact points between the boat cradle and the hull of the boat positioned thereon. The water piping is then lowered into the body of water each time the boat cradle is lowered into the body of water. Fresh pressurized rinsing water is then discharged through the water piping and the multiplicity of holes to spray upward onto the boat hull to rinse the boat hull, after the water piping has been elevated above the surface of the body of water. This patent is primarily adapted to pontoon boats and other doubled hulled vessels and require an elaborate design of pipes unique to a particular type boat. These spray pipes are then attached to that part of the lift where the boat sets as it is raised and lowered to and from the body of water. The fresh pressure water is supplied via flexible hoses. 
   Various deficiencies exist with each of the proposed methods of maintaining the hulls of boats in a generally clean generally contamination free state while elevated above a body of water in a storage orientation on a boat lift. These attempts have been less efficient than desired. As such, it may be appreciated that there continues to be a need for a simple method of rinsing a hull of a boat during a raising of the boat out of a body of water utilizing a boat lift where the rinsing removes as much contaminating material as possible from the boat hull during the time of the actual raising of the boat. The present invention substantially fulfills these needs. 
   SUMMARY 
   In view of the foregoing disadvantages inherent in the known types of boat hull washing devices, your applicant has devised a method of fresh water rinsing the boat hull during a removal of the boat from a body of water utilizing a boat lift. The method has the steps of providing a boat lift having a boat cradle, providing a plurality of fresh water discharges, elevationally displacing the boat on the boat cradle and discharging fresh water from each of the discharge locations during at least a portion of the elevational displacement of the boat. The boat lift has a fixed portion and the boat cradle with the boat cradle elevationally displaceable by the boat lift relative to the fixed portion. The boat cradle engages the hull of the boat for gravity biased retention of the boat on the boat cradle during a removal of the boat from the body of water. The boat lift has means to elevationally displace the boat out of the body of water and into the body of water. The plurality of provided fresh water discharges are attached relative to the fixed portion of the boat lift and positioned facing inward on opposing sides of the boat when the boat is positioned on the boat lift. Each fresh water discharge location is generally restricted to a fixed elevational position relative to the fixed portion of the boat lift. During the elevational displacing of the boat cradle to remove the boat from the body of water the discharging of the fresh water from each of the fresh water discharge locations occurs. This provides for fresh water to make contact with all surfaces of the hull generally from the deck line of the boat downward during the elevational displacement of the boat to rinse the boat hull to remove water from the body of water deposited on the boat hull. 
   My invention resides not in any one of these features per se, but rather in the particular combinations of them herein disclosed and it is distinguished from the prior art in these particular combinations of these structures for the functions specified. 
   There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto. Those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention. 
   It is therefore a primary object of the present invention to provide for a simple method of rinsing a boat hull of a boat during an elevational displacement of the boat utilizing a boat lift from a lowered launching/landing position in a body of water to a raised storage position above the body of water. 
   Other objects include; 
   a) to provide for the rinsing of the boat hull to occur routinely each and every time that the boat lift is operated to raise the boat out of the body of water. 
   b) to provide for the rinsing of the boat hull to occur without extending an operational time beyond that consumed by the raising operation of the boat lift. 
   c) to provide for an elevationally fixed positioning of the fresh water discharges where the boat moves upward relative to the fresh water discharges during the raising of the boat by the boat lift where the surfaces to be rinsed pass through a radially disposed rinsing plane. 
   d) to provide for a generally horizontally fixed positioning of assemblies of the fresh water discharges relative to the fixed portion of the boat lift where the assemblies of the fresh water discharges remain generally stationary and do not move significantly forward or back along the boat and do not move significantly toward or away from the boat during operation. 
   e) to provide for each of the fresh water discharges to oscillate repetitively within a respective angle of discharge many times during each raising operation of the boat to insure adequate coverage of the respective portion of the boat hull within the respective angle of discharge. 
   f) to provide for each of the fresh water discharges to oscillate within the respective angle of discharge with each pass through the respective angle of discharge consisting of a series of steps. 
   g) to provide for each of the series of steps through the respective angle of discharge of each of the respective fresh water discharges to have an impacting burst of a stream which may impact a location on the boat hull to maximize contamination removal at the respective location and adjacent areas. 
   h) to provide for a top to bottom rinsing of the boat hull where rinsing runoff assists in a cleaning of surfaces below a point of contact with the rinsing fresh water application. 
   i) to provide for each of the fresh water discharges to also utilize a conventionally known sprinkler type head as used to dispense a stream of water in a repetitive cycle in a series of steps across a definable angle of discharge. 
   These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated the preferred embodiments of the invention. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings wherein; 
       FIG. 1  is a top plan view of a dock having a boat lift with a boat hull rinsing device installed relative to the boat lift. 
       FIG. 2   a  through  FIG. 2   e  are end elevational views of the dock, boat lift and boat hull rinsing device shown in  FIG. 1 , with the mid sections of the forward most major pilings cutaway to more fully illustrate the components therebehind, and with the addition of a boat, and in various positional orientations during transfer of the boat lift between a standard loading unloading lowered elevational position,  FIG. 2   a , and the boat in a storage orientation on the boat lift,  FIG. 2   e.    
       FIG. 3   a  is a top plan view of the boat hull rinsing device, select portions of the boat lift and the boat and showing depictions of various angles of discharge from the various fresh water discharges, the upper portions of the major pilings and certain higher structures of the boat lift have been removed, including the cables, to more fully illustrate the invention. 
       FIG. 3   b  is a top plan view of depiction of  FIG. 3   a  with representations of various directed streams from the various fresh water discharges during their respective cycles. 
       FIG. 4  is an elevational view of a sprinkler type head. 
       FIG. 5   a  through  FIG. 5   f  are top plan views depicting a series of steps during oscillation of the sprinkler type head depicted in  FIG. 4  through an angle of discharge. 
       FIG. 6  through  FIG. 14  are flow charts depicting features of the method. 
   

   DESCRIPTION 
   Many different boat hull rinsing devices having features of the present invention are possible. The following description describes the preferred embodiment of select features of those boat hull rinsing devices and various combinations thereof. These features may be deployed in various combinations to arrive at various desired working configurations of boat hull rinsing devices. 
   Reference is hereafter made to the drawings where like reference numerals refer to like parts throughout the various views. 
   The term fresh water as used herein has two (2) meanings depending upon the context in which it is used. In the context of referring to a body of water as fresh water the term is intended to distinguish it from a salt water body of water. In this context fresh water does not imply a lack of contamination and materials within the fluid which may coat and accumulate on objects, such as a boat hull of a boat. In the context of fresh water as a rinsing medium used with the present invention the fluid referred to as fresh water will be relatively free of contaminates. The fresh water as a rinsing medium can be centrally provided drinking water, water provided from a well, filtered water drawn from a suitable water source, centrally provided partially treated water intended for irrigation purposes, primarily lawn watering but not drinking, or some other suitable relatively clean source of water. The optional addition of a cleaning solution to the fresh water supply by some means prior to rinsing may be possible if required. 
   The term contamination as used herein refers to a very wide spectrum of materials, both organic and inorganic. Contamination may involve living matter, either in fresh water or salt water, which may attach itself to surfaces of the boat hull. Contamination may involve naturally occurring elements as well as man made, or refined, elements which may attach to the surfaces of the boat hull. 
   The term fresh water discharge as used herein refers to any structural configuration which has a fresh water supply and means to discharge the fresh water in some predefined dispersal pattern under at least modest pressure suitable for the rinsing required by the present invention. 
   Referring now specifically to  FIG. 1  through  FIG. 3   b , a boat hull rinsing device  20  has a plurality of fresh water discharges, fresh water discharge  60  depicted as an embodiment used to explain various preferred features of the present invention, and means to commence and terminate discharge, in the form of a control panel  24 , see  FIG. 2   a . Boat hull rinsing device  20  is supplied with fresh water from any suitable source, such as municipal water supply line  26 . While many fresh water supplies will arrive under suitable pressure for discharge for use with the present invention, a dedicated pressure creation device, such as a water pump, may be provided, if required. When water is drawn from a water source which is not as free of contamination as desired, filtering of the water may occur to bring it to a suitable purity. 
   Boat  28 , of any applicable design, will have a hull  30  with a deck  31  positioned above hull  30 , see  FIG. 2   a . On applicable boats not having a deck a gunwale, defining the top edge of the side of the boat, will be considered to be the equivalent of a locational position of the deck. Hull  30  has a hull water line  32  where boat  28  routinely rests in a body of water  34 . The boat is merely a workpiece which is acted upon by the invention. 
   Boat hull rinsing device  20  will operate with a boat lift  36 , specifically see  FIG. 1  and  FIG. 2   a , of any applicable design. Boat lift  36  will have a fixed portion  38  and a boat cradle  40 . Fixed portion  38  of boat lift  36  will comprise those portions which are generally restricted to a single elevational orientation during operation of boat lift  36 . Boat cradle  40  will comprise those portions which are elevationally displaced during operation of boat lift  36  to lower or raise boat  28 . The boat lift is merely a workpiece which is acted upon by the invention. 
   The term boat cradle includes those portions of the boat lift which are elevationally displaced during operation of the boat lift, including any supporting cables or members, if present, and is not limited to those portions which contact the boat. 
   Boat lift  36  is routinely used to transfer boat  28  from a floating orientation  42  in body of water  34 , see  FIG. 2   a , to a storage orientation  44 , see  FIG. 2   e . Boat lift  36  is also routinely used to transfer boat  28  from storage orientation  44  to floating orientation  42 . Various vertically oriented guide poles  46  extend upward from boat cradle  40  to assist the boater in properly positioning boat  28  relative to boat lift  36 . 
   While boat  28  is within body of water  34 , see  FIG. 2   a , contamination  50  from body of water  34  may become present on at least hull  30  of boat  28 . When boat  28  is positioned on boat cradle  40  and is raised out of body of water  34  utilizing boat lift  36  it is desirable to rinse as much contamination  50  off of hull  30  as possible. 
   Boat hull rinsing device  20  operates, in cooperation with operation of boat lift  36 , to provide for rinsing  52  of a portion of hull  30  of boat  28  from above hull water line  32 , and preferably from or near deck  31 , downward, see  FIG. 2   a . Boat hull rinsing device  20  will also provide for rinsing  52  of a portion of boat cradle  40 . Rinsing  52  generally occurs during raising elevational displacement  54  of boat cradle  40 , see elevational changes from  FIG. 2   a  through  FIG. 2   e.    
   Referring now specifically to  FIG. 1 ,  FIG. 3   a  and  FIG. 3   b , a plurality of fresh water discharges  55 ,  56 ,  58 ,  60 ,  62 ,  64 ,  66 ,  68 ,  102  and  104  are positioned on opposing sides  72  and  74  of boat cradle  40  of boat lift  36 . Each fresh water discharge  55 ,  56 ,  58 ,  60 ,  62 ,  64 ,  66 ,  68 ,  102  and  104  is supplied with fresh water via a water supply conduit  75  utilizing fresh water supplied from municipal water supply line  26 . Each fresh water discharge  55 ,  56 ,  58 ,  60 ,  62 ,  64 ,  66 ,  68 ,  102  and  104  is positioned at a respective fixed elevation, such as fixed elevation  76  for fresh water discharge  60 , see  FIG. 2   b  and  FIG. 4 , relative to fixed portion  38  of boat lift  36 . In certain installations all deployed fresh water discharges will be positioned at a common elevation relative to fixed portion  38  of boat lift  36 . In certain installations at least some of the deployed fresh water discharges will be positioned at unique elevations relative to fixed portion  38  of boat lift  36 . A fresh water discharge may be positioned along a center line of boat lift  36  to rinse a forward portion of hull  30  on opposing sides of a center line of boat  28 . Typically the number of deployed fresh water discharges will be dependent upon the length of the specific boat to be washed. 
   Each fresh water discharge will be directed generally toward boat  28  when positioned on boat lift  36 . Preferably each fresh water discharge will have means to distribute fresh water within a respective angle of discharge, such as angle of discharge  78  for fresh water discharge  60 , see  FIG. 3   a . In these instances certain directional discharges, at least at the opposing ends of angle of discharge  78 , may not be directed toward boat  28  when positioned on boat cradle  40  and at certain elevational orientations. When boat  28  is fully elevated to storage orientation  44 , see  FIG. 2   e , hull  30  may be above the path of discharge of directed stream  80 . 
   Control panel  24 , see  FIG. 1  and  FIG. 2   a , the means to commence and terminate discharge and control the cradle movement, activates the discharge of fresh water from fresh water discharges  55 ,  56 ,  58 ,  60 ,  62 ,  64 ,  66 ,  68 ,  102  and  104  during raising elevational displacement  54  of boat  28  out of body of water  34  utilizing boat lift  36 . Control panel  24  also deactivates the discharge of fresh water from fresh water discharges  55 ,  56 ,  58 ,  60 ,  62 ,  64 ,  66 ,  68 ,  102  and  104  at, or near, the termination of raising elevational displacement  54  of boat  28  out of body of water  34  utilizing boat lift  36 . If desired this activation and deactivation occurs at generally the same time that boat lift  36  is activated and deactivated to raise boat cradle  40 . This provides for fresh water to be discharged during at least a portion of raising elevational displacement  54  of boat  28  out of body of water  34  utilizing boat lift  36 . Runoff of the fresh water dispersed by the present invention from surfaces of the boat hull and of the boat cradle, enhance the rinsing operation. 
   It is possible to provide for each, or select, fresh water discharges to disperse a directed stream  80  of water or to provide for some divergence of the flow. A divergence of the flow, or scattering of the water into a multitude of droplets, can provide for a very thorough rinsing action. In the embodiment depicted each fresh water discharge further comprises directed stream  80  of fresh water during operation of boat hull rinsing device  20 . Each directed stream  80  of fresh water maintain a tight containment  82  from a discharge point  84 , see  FIG. 2   b  and  FIG. 4 , from fresh water discharge to contact with hull  30  of boat  28  or to contact with boat cradle  40  of boat lift  36 . As mentioned elsewhere herein each fresh water discharge ideally will oscillate repetitively through a respective angle of discharge  78 , see  FIG. 3   a . In certain situations angle of discharge  78  will result in directed stream  80  entirely missing making contact with boat  28  or boat cradle  40  of boat lift  36 . This passing of possible contact points ensures that all surface intended to be rinsed by a respective fresh water discharge actually are rinsed by the present invention. 
   Referring generally now to  FIG. 4  and  FIG. 5   a  through  FIG. 5   f , each directed stream  80  of water preferably is further broken down into a series  86  of intermittent bursts  88  where a multiplicity of fluid impacts  90 , see  FIG. 2   b , occur on hull  30  of boat  28  and on boat cradle  40  of boat lift  36 . By providing a very large number of fluid impacts  90 , which will each provide a dislodging effect to any stubborn contamination present upon the impacted surface, a thorough rinsing and cleaning is ensured. Another benefit of each fluid impact  90  is the splashing effect which distributes fresh water to hidden surfaces which are not in a direct line of rinsing of any of the various directed streams. Examples of such hidden surfaces include those on boat cradle  40  which are facing hull  30 . It being understood that the beneficial splashing will occur with spraying of a less contained stream of fresh water than that of directed stream  80 . 
   Many devices have been proposed, primarily in the lawn irrigation field, to distribute water in radial patterns, or in partial radial patterns, from a pivotal anchoring axis. Many of these prior art devices may be used directly with the present invention, or may be easily modified to be used with the present invention. 
   In the embodiment depicted, referring again to  FIG. 4  and  FIG. 5   a  through  FIG. 5   f , a sprinkler type head  70 , a commercially available lawn watering device, acts as each of the deployed fresh water discharges. Sprinkler type head  70 , as conventionally known in the art, has features to perform motion functions utilizing water flowing therethrough. Sprinkler type head  70  provides for dispensing of stream of fresh water while oscillating  92  through angle of discharge  78 . Oscillation  92  occurs in a repetitive cycle  94 . Each pass through angle of discharge  78  occurs in a series of steps  96  where directed stream  80  is broken down into intermittent bursts  88 . Sprinkler type head  70  is ideally suited for use with the present invention as it provides ideal fresh water distribution coverage in a preferred coverage mode. Sprinkler type head  70  is also simple to adjust subsequent to installation, does not require any maintenance and, if damaged, may be replaced by most users having novice level plumbing skills. It being understood that many, very many, cycles through each respective angle of discharge occur for each fresh water discharge during the raising elevational displacement of the boat cradle. 
   Sprinkler type head  70  also has an elevational angle of discharge  98 , see  FIG. 2   b , which projects directed stream  80  upward slightly. Sprinkler type head  70 , as conventionally known in the art, has features which permit adjustment of elevational angle of discharge  98  to a desired orientation. A slightly upward projection is ideally suited to the rinsing of hull  30  as elevational angle of discharge  98  is complementary to the slope of many boat hulls. Each fresh water discharge may be provided with a similar elevational angle of discharge which complements the corresponding contour of the specific boat hull to be cleaned. 
   Referring now to  FIG. 3   a , preferably a sufficient number of fresh water discharges will be provided to permit a significant overlapping of adjacent angle of discharges  78  on each of the two (2) side of the boat lift. Each angle of discharge  78  of adjacent pairs of fresh water discharges on a respective side  72  or  74  of boat cradle  40  overlap significantly at a closest contact point on hull  30 . Ideally, such overlap provides for each area on boat  28  to be contacted by fresh water discharged from two (2) fresh water discharges. 
   Control panel  24 , specifically see  FIG. 1  and  FIG. 2   a , has means to commence fresh water discharge which is synchronized to commence fresh water discharge automatically at a commencement of operation of boat lift  36  to raise boat cradle  40 . Control panel  24  has means to terminate fresh water discharge which is synchronized to terminate fresh water discharge automatically at a termination of operation of boat lift  36  to raise boat cradle  40 . Override means acts to prevent fresh water discharge during a select raising elevational displacement of boat  28  out of body of water  34  utilizing boat lift  36 . This override of the rinsing operation may be rarely utilized. Control panel  24  may be provided with this feature, mere shutoff of the supply of fresh water may provide this feature or some other arrangement may provide this feature. 
   Control panel  24  has a user input  100 , see  FIG. 1  and  FIG. 2   a , to provide for operational override means to deliberately pause operation of boat lift during raising elevational displacement. One example of such pausing of the raising operation involves prolonging the time span required to perform the raising operation at a specific location, such as at hull water line  32 , which may require additional rinsing to properly clean. This pausing of operation provides for a more thorough rinsing operation to occur due to the longer time span of operation of boat hull rinsing device  20  during the raising of boat  28 . Examples of when such longer, and more thorough, rinsing operations might be performed include when the boat to be washed has spent a particularly long period of time in the body of water and when the boater intends to store their boat for a particularly long period of time on the boat lift. Additionally the pausing of the raising operation permits the user to manually manipulate a wiping tool, such as a broom, to dislodge any particularly resistant contamination  50  from hull  30 . 
   It is possible, if desired, to provide stationary wide dispersal fresh water discharges which merely sprays fresh water from a fixed elevation and in a single stationary directional orientation during raising of the boat cradle of the boat lift and the boat if positioned thereon. This is particularly desirable for the aft section, stern, of the boat to provide a rinsing of the surfaces of the aft of the boat and to those components of the engine and drive components, such as propeller, positioned thereat. Opposing fan fresh water discharges  102  and  104 , see  FIG. 1  and  FIG. 3   a , are provided and positioned on opposing sides  72  and  74  of boat cradle  40 . Fan fresh water discharges  102  and  104  are positioned at a fixed elevational position relative to fixed portion  38  of boat lift  36 . Fan fresh water discharges  102  and  104  are each directed generally toward boat cradle  40  of boat lift  36  for fixed stationary discharge  108  of fresh water in a fan shaped discharge orientation  110  on aft section  112  of boat  28 . Control panel  24 , see  FIG. 2   a , also provides for the means to commence and terminate fresh water discharge from fan fresh water discharges  102  and  104  during raising elevational displacement  54  of boat  28  out of body of water  34  utilizing boat lift  36 . This provides for fresh water to be discharged from fan fresh water discharges  102  and  104  during at least a portion of raising elevational displacement  54  of boat  28  out of body of water  34  utilizing boat lift  36 . 
   It is possible to provide control panel  24 , see  FIG. 2   a , with wireless communication means, as conventionally known in the art. This provides for the boater to control boat hull rinsing device  20 , and boat lift  36  if desired, while being spaced from control panel  24 , including while in boat  28 . 
   Preferably operation of boat hull rinsing device  20 , as depicted in  FIG. 1   a  through  FIG. 1   e , commence while boat  28  is still generally elevated out of body of water  34 . It is possible to provide for such commencement to occur at any desired point during the raising of boat  28  utilizing boat lift  36 . This is particularly desirable when the user desires the option of completely rinsing hull  30  during a partial lowering and raising operation of boat lift  36  without placing boat  28  into body of water  34 . This partial lowering and raising operation then occurs without reintroducing contamination  50  from body of water  34  to hull  30 . This arrangement is easily accomplished by elevational positioning of the deployed fresh water discharges in cooperation with a sufficiently high storage orientation  44  provided by boat lift  36 . 
   Referring now to  FIG. 6 , a ‘method of fresh water rinsing a portion of a boat hull of a boat during a removal of the boat from a body of water utilizing a boat lift’  114  is depicted. ‘Method’  114  has the steps of ‘providing a boat lift’  116 , ‘providing a plurality of fresh water discharges’  118 , ‘elevationally displacing the boat cradle’  120  and ‘discharging fresh water’  122  from ‘provided fresh water discharges’  118 . 
   Referring now to  FIG. 7 , ‘provided boat lift’  116  has a ‘fixed portion’  124 , a ‘boat cradle’  126  and ‘means to elevationally displace boat cradle out of body of water and into body of water’  128 . ‘Boat cradle’  126  is elevationally displaceable by ‘provided boat lift’  116  relative to ‘fixed portion’  124 . ‘Boat cradle’  126  engages a ‘hull’  130  of a ‘boat’  132  for ‘gravity biased retention’  134  of ‘boat’  132  on ‘boat cradle’  126  during a ‘removal’  136  of ‘boat’  132  from a ‘body of water’  138 . ‘Boat’  132  further has a ‘deck’  140  positioned above ‘hull’  130 . ‘Boat cradle’  126  of ‘provided boat lift’  116  has a ‘standard boat loading unloading lowered elevational position’  142  relative to ‘fixed portion’  124  of ‘provided boat lift’  116 . 
   Referring now to  FIG. 8 , ‘provided fresh water discharges’  118  are positioned on ‘opposing sides’  144  of ‘boat cradle’  126 . Each ‘provided fresh water discharge’  118  is generally restricted to a ‘fixed elevational position’  146  relative to ‘fixed portion’  124  of ‘provided boat lift’  116 . ‘Elevationally displacing the boat cradle’  120  acts to remove ‘boat cradle’  126  and ‘boat’  132  positioned thereon from ‘body of water’  138 . ‘Discharging fresh water’  122  occurs from each ‘provided fresh water discharge’  118  during at least a portion of a ‘raising elevational displacement’  148  of ‘boat cradle’  126  where ‘fresh water’  150  makes contact with a portion of ‘hull’  130  of ‘boat’  132  from ‘deck’  140  downward during ‘raising elevational displacement’  148  of ‘boat cradle’  126  to ‘rinse’  152  the portion of ‘hull’  130  of ‘boat’  132  below ‘deck’  140  to remove water of ‘body of water’  138  deposited on ‘hull’  130 . 
   Referring now to  FIG. 9 , each ‘provided fresh water discharge’  118  further comprises ‘oscillation means’  154  to provide for ‘oscillating discharge’  156  through an ‘angle of discharge’  158 . 
   Referring now to  FIG. 11 , each ‘provided fresh water discharge’  118  further comprises a ‘sprinkler type head’  160  for ‘spraying a stream of fresh water’  162  in a ‘series of steps’  164  across ‘angle of discharge’  158  in a ‘repetitive cycle’  166  during ‘raising elevational displacement’  148  of ‘boat’  132  out of ‘body of water’  138  utilizing ‘provided boat lift’  116 . 
   Referring now to  FIG. 12 , each ‘angle of discharge’  158  of ‘adjacent fresh water discharges’  168  on a ‘respective opposing side of boat cradle’  170  of ‘provided boat lift’  116  ‘overlap significantly on boat hull’  172  of ‘boat’  132  positioned on ‘provided boat lift’  116  at some point during operation of ‘provided boat lift’  116 . 
   Referring now to  FIG. 13 , each ‘provided fresh water discharge’  118  further comprises a ‘directed stream’  174  of ‘fresh water’  150  during operation where each ‘directed stream’  174  of ‘fresh water’  150  maintain a ‘tight containment’  176  from a ‘discharge point’  178  from ‘fresh water discharge’  180  to a ‘contact’  182 . 
   Referring now to  FIG. 10 , each ‘directed stream’  174  of water further comprise a ‘series of intermittent bursts’  184  where a ‘multiplicity of fluid impacts’  186  occur during operation. 
   Referring now to  FIG. 14 , ‘means to elevationally displace boat cradle out of body of water and into body of water’  128  further comprises ‘operational pausing means’  188  to deliberately pause an ‘operation’  190  of ‘provided boat lift’  116  during ‘raising elevational displacement’  148  out of ‘body of water’  138  where a ‘longer period of time’  192  is consumed to provide for a ‘more thorough rinsing operation’  194  to occur at a ‘location on the boat hull corresponding to the pause of operation of the boat lift’  196 . 
   With respect to the above description then, it is to be realized that the optimum dimensional relationships for the parts of the invention, to include variations in size, material, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention. 
   Therefore, the foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.