“I assume the interior breadth as from 27 to 30 feet at the largest part.

“The highest rowlock as 9 feet, the lowest 3 feet from water-line.

“The interior fittings waterproof to the height of 6 feet.

“The lower and second rowlocks, closeable at will by the rower drawing a plug from without, as the rising sea makes them useless.

“The disposition of rowlocks would thus be, for a set:—

I cannot find any other way in which to avoid collisions.

“The oars are 9 feet, 13 feet, 18 feet, 24 feet 6 inches, and 35 feet. The long oars have handles thus:—