In larger vessels, we believe, two breakers are used, connected by saddle-shaped iron bars; these enable one, or perhaps two men to sit, with their shoulders considerably above the surface; while beckets of rope all round would enable a greater number, say the crew of a capsized boat, to support themselves with a fair chance of safety. The size, however, of a life-buoy must always be limited. It is mostly required to save one person who has fallen overboard; and, though perhaps sufficient to support more, it should never be so large as to be dangerous or inconvenient when taken into the boat put out in a heavy and dangerous gale to the rescue.
Several fathoms of small line should be and often are attached to the buoy, so that if it is let go in time the swimmer may catch it, and be saved without the necessity of lowering a boat. We have seen a “life line” of coir or cocoa-nut fibre, which is very buoyant, successfully veered away to an overladen and endangered boat at a considerable distance, when a hempen rope, which sinks by its own weight, would have been of no service.
THE CALABASH FLOAT, MAKORO OR MAKARA, OF CENTRAL AFRICA.
Calabash float.
Nearly similar in principle to this last-named life-buoy is the calabash float, described by Dr. Barth as being used by the natives of Central Africa; it is simply a bar or plank of light wood, so laced to the bottom of two large calabashes, that a man sitting on the bar, as he would upon a saddle, will sink about waist deep, and may use his hands to paddle himself across the stream.
Reed boat.
Our illustration shows how any buoyant article in the traveller’s possession might be used in this manner. The boxes shown on pp. [8] and [9] are designed expressly for such emergencies. Small water “vatjies,” barrels, or tin cans, wooden boxes, even though somewhat leaky, wrapped in canvas or two or three thicknesses of calico, which need not be cut, would become sufficiently tight for a short voyage. To make a reed boat, take reeds of any length you wish, a foot or two more than half the length of your boat, lay them lengthwise on level ground, with their small ends toward the ends of your intended boat, and their butts overlapping each other by a foot or two; take cord or other material for lashing, and interweave it with the reeds till the part in the centre resembles a flat cheese-mat, then bend it round the hoop which you intend for the midship frame. Insert smaller frames toward each end, and finally gather up the ends of the reeds into a point, cover this with some waterproof material, oiled calico or canvas, &c., or canvas simply pasted with flour and water, and you will have a boat buoyant and more or less durable according to the strength of the material.