The matter of the proportion of the length of the boat
to its beam is one upon which no definite rule can be

u.,.w,,t; Google



CONSTRUCTION AND OPERATION 109

laid down. The higher the speed required, the narrower
the proportional beam as a rule. The limit in present

practice is the ration of 9 or 10 to 1 for high speed boats
and the ratio ranges down to 4, 4>^, or 5 to 1, which is the
proportion of the length to beam in small and low speed
boats. Moderate sized craft designed for fair speed, sea-
worthiness and comfort may show a ratio of 5j/2, 6, or 7
to 1 between length and beam.
The following table shows the length and beam, engine
horse power, etc., in a typical series of boat models built
on the New England coast :



Length


Beam


H.
P.
Nur
Cyl


[iber of
inders


16 ft.
4 ft. 6 in.
I'A


to


2






18 ft.
4 ft. 8 in.
2%


to


3






20 ft.
5 ft. 6 in.
3/»










22 ft.
5 ft. 8 in.
4










25 ft.
6 ft. 3 in.
5










25 ft.
6 ft. 6 in.
6








2


28 ft.
6 ft. 6 in.
6








2


28 ft.
6ft. Sin.
7








2


30 ft.
6 ft. 10 in.
8








2


32 ft.
7 ft.
8








2


32 ft.
7 ft. 3 in.
10








2


35 ft.
7 ft. 10 in.
