N.B.—There is no information to show how the rate of sailing was assessed. We know not (a) whether the vessel was sailing on a wind or off; whether close-hauled or with the wind abeam; (b) whether the distance was taken from a measured mile reckoned between two fixed objects ashore; (c) what sail was set; whether reefed or not; (d) whether the speed was estimated by means of the old-fashioned log.
It is probable that the last mentioned was the method employed, but in any one of these cases the rate given can only be approximate unless we know the force and angle of the wind at each trial trip. The non-nautical reader may be reminded in considering the rates given above that a knot is equivalent to 1000 fathoms or, more exactly, 6086 English feet.
SPECIFICATION FOR BUILDING A CUTTER FOR THE REVENUE SERVICE OF THIRTY-FIVE TONS
(As built in the year 1838)
LENGTH.—From Stem to Sternpost,
44 feet. Keel for tonnage, 41
BREADTH.—Extreme from outside the Plank, 14 feet 5 inches.
DEPTH.—From the upper-part
of the Main Hatch-Beam to the Ceiling
alongside the Keelson, 7 feet 8 inches.
KEEL.—The Keel to be of good
sound Elm, in not more than two
pieces, with Hook and Butt Scarphs 6 feet long, sided 6-1/2
inches. Depth aft 12 inches, forward 14 inches, with a false