Word: hulled
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Dates: during 1960-1969
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Gross tonnage is not the weight of a ship, it is a measurement, in units of 100 cubic feet, of the volume of enclosed space in the hull and superstructure. "Gross tons" is believed to have had its origin in the number of huge casks (tuns) of wine that oldtime ships had the space to carry...
...full specifications. But her 30-ton weight matches that of such U.S. 12-meters as Vim and Columbia; so do her 11-ft. 10-in. beam and her 70 ft. of overall length. The yacht's decks are of Canadian cedar, overlaid with waterproof blue fiber glass. Her hull is of Honduras mahogany, covered with six coats of white paint, decorated with a thin gold stripe and the five stars of the Southern Cross. Her sails, tailored from light blue Dacron, range in weight from ¼ oz. per sq. yd. (for the spinnakers...
...Outstanding design departure is a 17ft. reinforced-plastic motorboat by Outboard Marine. It has a three-keeled hull which, say the manufacturers, reduces pounding at high speeds. Like a number of other boats in the show, Outboard Marine's is equipped with an inboard-outboard (80 h.p.) engine, a style that is increasing in popularity. This design allows for use of the more efficient and con venient in-line inboard engine, and at the same time provides the advantage of an outboard drive, i.e., allowing the propeller to be raised for shallow channels and for beaching. Price...
...small jet-propulsion unit for planing hulls up to 22 ft. in length is Aerojet-Generals Hydrocket. This device scoops water through an intake duct and feeds it into an engine-driven impeller. Centrifugal force shoots the water through perforations in the impeller at high speed, driving the boat forward. Aerojet-General claims speeds of 40 m.p.h. for an 18-ft. hull. Price...
...Boatbath is pulled closed; pellets of calcium hypochloride (swimming-pool chlorine) are dropped in. Thus the boat is floating in a bath of chlorinated water, which inhibits the growth of both barnacles and grass. A dose of four pellets is enough to keep a 29-ft. hull growth-free for at least one month, provided that the Boatbath is not opened...