Improvements in the Construction of Cargo Vessels,
Year: 1897

page_text: Date of Application, 22nd Dec., 1897
Complete Specification Left, 22nd Sept., 1898-Accepted, 5th Nov., 1898
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Cargo Vessels,
I, GEORGE MITCHELL HARROWAY, of 8, Cambridge Terrace, Borough Road East,
Middlesbrough, in the County of Yorkshire, Naval Architect, do hereby declare
the nature of this invention to be as follows:-
My invention relates to cargo vessels and more especially to those for carrying
buik cargoes.
It is the object of my invention to so construct and arrange the
well spaces or that part of the weather deck which intervenes between the poop
and bridge and bridge and forecastle of a vessel of ordinary form and construction
that the said well spaces may be adapted for cargo carrying purposes, at the
same time improving the self trimming character of the vessel and enabling the
cargo to be discharged in a more convenient and expeditious manner than with
vessels as at present constructed.
According to my invention the beams and plating of the weather deck at the
said parts intervening between the poop and bridge and bridge and forecastle
are raised and carried up in a curve or curves convex externally or in a combina-
tion of curves and straight parts with the curves convex externally and the straight
parts at a suitable angle, to the level of a longitudinal raised working platform.
or deck at or about the same height as and joining the poop and bridge and
bridge and forecastle. The raised working deck is provided with the usual cargo
hatches and is arranged with a walking gangway on both sides of the hatch
coamings and rails will be provided in convenient positition. The said specially
formed raised portions of the weather deck on either side of the working deck
or platform may be of the same cross section for the greater portion of their
length or of greater horizontal transverse width at or about the parts central
between the poop and bridge and bridge and forecastle, decreasing progressively
in a curve, in all cases ultimately merging by a curve or curves into the ordinary
form of the vessel where they meet and join the said parts thus producing an
upper structure with an unbroken surface.
In such a construction the deck beams will be carried up in one or more parts
to correspond with the form of the said raised portions and the shell plating and
that of the weather deck may be continuous, the sheer strake being bent to a
corresponding curve.
From the herein-described construction and arrangement of weather deck and
working platform it will be seen that a gradually curving surface will occupy
the spaces between the poop and bridge and bridge and forecastle and similarly
curved ends will take the place of the ordinary square fronts to the poop, bridge
and forecastle, and when a sea strikes the ship between these parts the water will
simply run up the curved portions and off again there being no surfaces presented
upon which the water may rest or strike more than another. The angular or
curved surface of the specially formed portions of the weather deck readily serve.
with or without the addition of added guide plates or shoots, as an efficient shoot
for the discharge of cargo over the side of the vessel into barges or otherwise.

page_text: The invention may be applied to vessels having a long or continuous poop
and forecastle; and apart from the special construction described, the vessel will
be fitted with the usual hatch coamings, deck houses, and other necessary deck
fittings. The machinery may be arranged amidships or as desired.
Dated this 21st day of December 1897
improvements in the Construction of Cargo vessels,
I, GEORGE MITCHELL HARROWAY, of 8, Cambridge Terrace, Borough Road East,
Middlesbrough, in the County of Yorkshire, Naval Architect, do hereby declare
the nature of this invention and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:
My invention relates to cargo vessels and more especially to those for carrying
bulk cargoes. It is the object of my invention to so construct and arrange the
well spaces or that part of the weather deck which intervenes between the poop
and bridge and bridge and forecastle of a vessel of ordinary form and construction
that the said well spaces may be adapted for cargo carrying purposes, at the
same time forming a complete self trimming vessel and enabling the cargo to be
discharged in a more convenient and expeditious manner than with vessels as at
present constructed.
According to my invention the beams and plating of the weather deck at the
said parts intervening between the poop and bridge and bridge and forecastle
are raised and carried up in a curve or curves convex externally or in a combina-
tion of curves and straight parts with the curves convex externally and the straight
parts at a suitable angle, to the level of a longitudinal raised working platform
or deck at or about the same height as and joining the poop and bridge and
bridge and forecastle.
I will further describe my invention in reference to the accompanying drawings
in which Fig. 1 is a longitudinal elevation of a ship constructed in accordance with
my invention. Fig. 2 is a plan of same and Fig. 3 is an enlarged cross sectional
view, the right half upon the line A-B and the left on the line CD of Fig. 1.
Fig. 4 is a half cross section of a modified form of raised deck and Fig. 5 is an
elevation of a modified construction of ship and Fig. 6 is a half section through
the bridge of same.
as
Referring to Figs. 1, 2 and 3 the beams and plating of the weather deck at the
well spaces or parts W, W intervening between the poop P and bridge B and
bridge B and forecastle Fare raised and carried up in a combination of curves
and straight parts as at W Fig. to the level of a longitudinal raised working
platform or deck D at or about the same height as and joining the poop P and
bridge B and bridge B and forecastle F. The curved raised parts of the deck are
convex externally as at w the straight portion W being at a suitable angle
shown in Fig. 3 or they may be carried up in a curve or curves convex externally
as in the half section Fig. 4. These raised parts W on either side of the working
deck or platform D may be of the same cross section for the greater portion of
their length as shown in Figs. 1 and 2 or they may be of greater horizontal trans-
verse width at or about the parts central between the poop P and bridge B and
bridge B and forecastle F decreasing progressively in a curve towards the ends.
The raised portion W ultimately merges by a curve as shown W2 Figs. 1 and 2
or by double curves or curves and straight parts into the ordinary form of the

page_text: ship where the parts W meet and join the poop, bridge and forecastle thus an
upper structure with an unbroken surface is produced.
The raised working deck or platform D is provided with the usual cargo
hatches such as shown at H H and is arranged with a walking gangway on both
sides of the hatch coamings as at G or GI Fig. 3 and rails such as it at the level
of the deck D or such as ' at the outer edge of the raised parts will be provided
and those at R¹ or both are or may be removable for convenience in loading and
unloading the vessel, the gangway G¹ and rails at R₁ are also useful for the
better support of deck cargo of timber or the like. Steps such as g g shown
dotted at Fig. 3 are or may be arranged at parts where required for convenience
in gaining access to and from the vessel from boats alongside.
In the construction above described the deck beams F will be carried up in
one or more parts as to correspond with the form of the said raised portions W
and the shell plating and that of the weather deck may be continuous the sheer
strake being bent to a corresponding curve as at S Figs. 3 and 4.
Referring to Figs. 5 and 6 the specially constructed weather deck W is carried
continuously from the poop P to the forecastle F and the bridge B is buiit
thereon together with the curved portion W2 which may be of the form shown in
Fig. 5 at W3 or as at W2 in the figures first referred to. It will be seen that this
construction is equivalent in outward appearance and effect to that before described
and the spaces 6 formed between the weather deck and the bridge B will be
available for water ballasting, as oil or coal bunkers or for other suitable purposes.
From the herein described construction and arrangement of raised weather
deck W and working platform or deck D it will be seen that a gradually curving
surface will occupy the spaces between the poop and bridge and bridge and fore-
castle and similarly curved ends will take the place of the ordinary square fronts
to the poop, bridge and forecastle, and when a sea strikes the ship between these
parts the water will simply run up the curved portions and off again there being
no surfaces presented upon which the water may rest or strike more than another.
The angular or curved surface of the specially formed portions W of the weather
deck readily serve, with or without the addition of added guide plates or shoots
as an efficient shoot for the discharge of cargo over the side of the vessel into
barges or otherwise, and apart from these advantages a large increase of enclosed
cargo space will be gained in the well spaces C and the working deck is at a good
height above the water.
The invention may be applied to vessels having a long or continuous and
poop
forecastle in which case the construction will be similar to that shown in Fig. 6
without the central bridge portion the machinery being then arranged in the
stern of the vessel.
Apart from the special construction described, the vessel will be fitted with
the usual hatch coamings, deckhouses, and other necessary deck fittings.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1-The improved construction of cargo vessel in which the weather deck at
the well spaces or parts intervening between the poop and bridge and bridge and
forecastle are raised and carried up inwardly in a curve or curves convex exter-
nally or in a combination of curves and straight parts with the curves convex
externally and the straight parts at a suitable angle, to the level of a longitudinal
working platform or deck at or about the same height as and joining the poop
and bridge and bridge and forecastle the said raised parts merging by a curve or
curves into the ordinary form of the vessel where they meet the poop, bridge and
forecastle.
2 The combination with the hull of a ship of ordinary form having a raised
poop, bridge and forecastle or poop and forecastle of a weather deck in the well
spaces raised in the forms described to the level of a working deck or platform

page_text: at or about the level of and joining the poop, bridge and forecastle or poop and
forecastle substantially in the manner and for the purposes set forth
3-The improved construction of cargo vessel in which the weather deck at the
well spaces between the poop, bridge and forecastle is raised and carried up at
a suitable angle to the level of a working deck or platform at or about the level
of and joining the poop, bridge and forecastle the said raised portions merging
into the ordinary form of the vessel where they join the poop, bridge and fore-
castle.
4 The improved construction of cargo vessel substantially as herein described
in reference to Figs. 1, 2 and 3 of the drawings with the modifications described
in reference to Figs. 4, 5 and 6 of the drawings.