Encl.No.3
Encl.No.4
The L.C.B. may be varied 5"
the ex verleent accordingly. The L.
either side of its present position.
t is desirable that the form amidships should
not be i ner than indicated, and if possible fuller, in
order to allow ample clearance around the boilers.
An outline plan of the stern fra le and rudder
is submitted, and you are requested to use either the
suggested design, or one with a closed aperture and semi
balanced rudder. Tour advice on the adequacy of the
rudder area at high and low speeds is requested.
t is proposed to fit a "Scimitar
ropeller
to the launch, and the leal 'gents for t is propeller
have undertaken to communicate with the manufacturers in
order that t ey may collaborate with you in producing a
sulta le desi,n which it is requested may be tested in
conjunction with the model.
The mean thickness of the shell plating is
.30" and the launch is to be clencher build.
A bilge keel deep is to be fitted for
about 45 feet, and the trace should be indicated by you.
The position of the anchor recesses are shown on the for 1
plan, and 7 would be glad of your observations as to
whether or not these are clear of the bow waves.
it is desi ed that this launch should be able
to onerate within the limits indicated on the enclosed
chart during the N.K. "unsoun. The cal Dyal Observatory
ecords give a maximum mean daily velocity of about 25
miles per hour with gusts uo to 15 miles per hour during
the Monsoon season. ean direction of "nd 2.
The model sho ld be subjected to wave tests
corresponding to the above conditions and would be glac
to receive your observations on the seaworthiness of this
16