PRESERVING Lives of Shipwrecked Persons. In our account of life-boats, we laid before our readers everything that seemed useful on so important a subject which was then known to us. Since that time we have met with the following description of a similar invention by a Mr Lukin of London, suggested during his casual residence at Lowestoff in Suffolk.

A boat constructed on this principle cannot be over-set or sunk by any power of wind and water; in proof of which the following particulars and description of the construction are made public, with the hope of rendering more generally known the easy means of saving many valuable lives; which might certainly be done, if one or two of these boats were built at each of our ports, and every ship furnished with one (at least) in proportion to her size.

Description and Dimensions of the Lowestoff Life-Boat.

| Length aloft | 40 | | --- | --- | | Keel | 37 | | Breadth amidships | 10 | | Depth | 3 |

exclusive of a moveable wash strake of 8

The form the same as the yawns of that coast; the stern post nearly upright.

External gunwales hollow, forming an oblique section of a parabola with the side of the boat, and projecting nine inches from it on each side; these gunwales are reduced a little in their projection towards their ends, and are first formed by brackets and thin boards, covered at top and bottom with one thickness of good sound cork, and the extremity or apex of the projection having two thicknesses of cork, the better to defend it from any violent blows it may meet with in hard service. The depth of these gunwales from top to bottom was 15 inches, and the whole covered with very strong canvas, laid on with strong cement to resist the water, and that will not stick to any thing laid upon it.

A false keel of wrought iron three inches deep, made of three bars rivetted together, and bolted under the common keel, which it greatly strengthens, and makes a very essential part of her ballast; being fixed so much below the floor, it has nearly double the power the same weight would have if laid on the floor, and therefore much