Improvements in Ships.
Year: 1896

page_text: Date of Application, 6th Jan., 1896-Accepted, 8th Feb., 1595
Improvements in Ships.
I, ISAAC SPY, of 26 Clyde Place, Glasgow in the County of Lanark, Scotland,
Naval Architect, do hereby declare the nature of this invention and in what manner
the same is to be perforineil, to be particularly described and ascertained in and by
the following statement:-
This invention relates to the hulls of ships and the object is to so modify the
shape of the hull that increased steadiness at sea and higher speeds may be obtained,
and that vibration, due to the working of the propelling machinery, may be
reduced.
I have illustrated my invention in the accompanying drawings, in which
Figs. I, II, and III show the arrangement when there are two wing vessels and
Figs. IV, V, and VI, the arrangement when there are four wing vessels.
Figs. I and IV are elevations, Figs. 11 and V are plans and Figs. III and VI
are transverse sections on the lines A. A. of Fig. 1, and B. B. of Fig. IV,
respectively.
Referring in the first instance to Figs. I, II, and III, 1 is the main portion of the
hull which, above the load water line, is a single structure; below this line the hull
is divided into three portions, a central portion 1', and two wing portious 2; these
three portions are separated by two channels 3 which are narrow forward but which
expand to a greater width aft. The central portiou 1' extends the whole length
of the ship, but the wing portions extend only about two-thirds of the length.
Above the water line the configuration of the ship is of the usual form, and
successive cross sections of the ship, from forward aft, show the gradual forination
of the wing portions 2 and the channels 3, the former attaining their maximum
dimensions amidships and the latter their maximum dimensions aft. The
configuration of the ship forward and aft of the channels is of the usual shape and
forms a continuous run with the channels. Below the water line the portions of the
hull are preferably of elliptical shape, and the outer surfaces of the wing portions
form a continuous run with the bounding surfaces of the hull.
Referring now to Figs. IV, V, and VI, 1, as before, is the main portion of the
hull which, above the load water line, is a single structure; below this line the hull
is divided into a central portion 1' and wing portions separated by chanuels 3; in
this arrangement however there are two inner wing portions 4 and two outer and
lesser wing portions 5. The remarks made in respect of Figs. I, II, and III, as
to general configuration etc., apply to Figs. IV, V, and VI, and it will be seen that
in carrying out my invention the hull can, in a manner similar to that described,
be divided, below the load water line, into a central and any even number of wing
portions.
The exact proportions, and the lines of the various parts are, of course, determined
in accordance with individual requirements.
The arrangement of the wing portions offers considerable advantages in the
regulation of the stability of the ship and serves to prevent excessive rolling and
pitching and also allows of a more rigid hull being made. The propelling machinery
may also, in this construction, be so arranged as to considerably lessen the vibration
resulting from the working thereof; and the speed obtainable for a given propelling
power and displacement is, with this construction, greater than with ships of the
usual construction. Considerable advantage also accrues from the construction
described inasmuch as the deck accommodation, which results from making the hull

page_text: above the water line a single structure, is much better adapted for passenger, cargo,
or fighting purposes, than in those cases in which the ship is composed of separate
vessels simply united together by a common deck.
The peculiar formation of the channels, as described, prevents the locking of
columns of water amidships, and the resulting undue pressure on the under water
portions.
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 herein described improvement in ships which consists in making the hull
single above the load water line but divided below the said line into a central and
an even number of wing portions separated by converging channels; substantially
as described and illustrated.
2. The improvement in ships substantially as described and iilustrated in Figs. I,
II, and III.
3. The improvement in ships substantially as described and illustrated in
Figs. IV, V, and VI.
Dated this 4th day of January 1896.
SLOAN & LLOYD BARNES,
Castle Chambers, 26 Castle Street, Liverpool,
Agents for the Applicant.