A Guide to Motor Boat Design and Construction - A Collection of Historical Articles Containing Information on the Methods and Equipment of the Boat Builder. Various
cabin the sides of the boat are built up for about two-thirds of the length (from bow to stern).
The height to which this can be carried will be determined by the stability of the craft in question.
In craft of considerable beam this can be done successfully, but with those of small beam more care has to be taken or the boat will be top-heavy.
The cabin work can be higher in river craft than on boats intended for use at sea, where the height of the cabin has a tendency to cause the boat to roll. With a stiff wind blowing broadside on, considerable drift or “leeway” is made, and constant correction of the course becomes necessary.
FIG. 7.—CABIN LAYOUT OF TYPICAL 30-FT. CBUISER.
As a rough guide it may be stated that a 30-ft. boat is the smallest size in which it is possible to obtain full headroom inside the cabin.
The actual layout and design of a cruiser depends upon the owner’s requirements. If the boat is intended for daytime cruising only, then one large cabin may suffice, but in the case where it is proposed to live on board additional accommodation must be provided. Fig. 7 is the layout of a typical 30-ft. cabin cruiser, suitable for week-end cruising.
A more luxurious type, however, is what is known as the bridge deck cruiser, illustrated by Fig. 8.
In this type, there is a saloon forward, then the bridge deck, aft of which is a sleeping cabin. The engine in this case is under the floor of the bridge deck.
A great feature about this type of craft is the complete protection from the weather.
The bridge deck may be provided with side curtains, thus making it into an additional cabin if required.
Fittings in the form of mooring cleats, rowlocks in small craft, and rudder bearings are usually made in bronze, gun-metal, or brass, although galvanised iron is used in cheaper quality work.
FIG. 8.—A BRIDGE DECK CRUISER.
On no account, however, must dissimilar metals be used in conjunction with each other, that is to say, a brass fitting must not be secured with iron screws, or the combination will be eaten away by galvanic action directly they become saturated with salt water. What actually happens is that the two metals form the elements of an electric battery, and the salt water the solution or electrolyte.
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