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By this means a dinghy can be stowed in a remarkably small space. Indeed, a boat 12ft. long, 4 ft. 2in. wide, and 1ft. 9in. deep, when shut, can be passed through a hatchway or hole 13 in. long by 6in. wide, and can, of course, be stowed in a compartment not shorter than half the length of the boat. It is obvious that for transport this division of the weight, as well as the saving of space, must often be of the greatest importance. Another form of folding boat, and one which, on account of its...

Paraffin Side Light With Prismatic Lens

The dioptric lens was copied from that used in lighthouses, and its function is to collect all the rays of light from the reflector and burner and throw them out (within the prescribed bearings) in one horizontal plane, just high enough above the sea level to catch the eyes of those navigating other vessels. Captain du Boulay says This condensing of all the light rays into a horizontal plane is all very well for steamers, but when sailing vessels are moving along steadily heeled over by their...

Fig

International Rule in fresh and salt water is approximately as follows Increase of length Rating in Fresh Waler. 12 Metres 5.5 Inches 10 4.5 9 4.0 8 3.5 7 2.75 6 2.0 A 6-metre boat measured in fresh water was found to have risen from 1 4 to 5 16 of an inch when measured in salt water. The figures given in the table are but a rough estimate, because the increase obviously depends upon the angle that the profile of the stem and stern make with the L.W.L. Salute.-- A salvo of cannon fired as a...