should she take the ground. To proceed with the notes:--

THE CUTTER YACHT "BLACK MARIA."

Displacement, 145 tons.

Draught of water on straight keel, 5 feet 2 inches.

Length of straight keel, 60 feet, then running away in a curving line
upwards, till at the bow it draws 10 inches.

Length of centre-board, 24 feet.

Total depth of ditto, 15 feet; weight, 7 tons.

Foremost end of ditto, about 8 feet abaft the foremost end of straight
keel.

When let down, it descends 10 feet at the further end, and 8 feet at the
foremost. It is made of oak, with sufficient lead let in to make it
sink. By an ingenious mechanical contrivance one man is enabled to raise
and lower it with perfect facility.

There is another centre-board abaft, about 10 feet from the stern, which
is 8 feet long, with a total depth of 9 feet, and, when down, extending
5 feet below the keel.

Length over all, 113 feet.

The extreme beam is 26-1/2 feet at 40 feet from the rudder-post running
aft to about 19 feet at taffrail; forward, it decreases about 20 inches
when abreast of mast, thence runs away sharp to about four feet at the
bow.

The mainmast is placed about 5 feet abaft the end of straight keel; it
is 92 feet long, housing 8 feet: the diameter in the partners is 32
inches, tapering off to 23 inches at the hounds. The mast is made of
white pine, the centre of it is bored out, for the lowest twenty feet
about 12 inches diameter--the next 20 feet, 10 inches diameter--the next
20 feet, 8 inches, and the remainder 7 inches. This was done to make the
mast lighter, and, by the circulation of air, enable it to season
itself.

The main boom is 95 feet long[F] and made like a cask. The staves are 31
in number, of white pine, 2-1/4 inches thick; the staves are of
different lengths, so as to vary the points at which they respectively
abut. The extreme length of boom is obtained by two lengths of the
staves; small cogs of wood are let in at intervals, half in one stave
and half in its neighbour, so as to keep them from drawing, the whole
bound together with strong hoops fitted with screws. The extreme
diameter of the boom is 26 inches where the sheets are fixed, tapering
off at the jaws, and 13 inches at the boom end. To give additional
support to the boom, an iron outrigger, extending about 3 feet on each
side thereof, is fixed where the boom-sheets are placed, and a strong
iron brace extends from the jaws through the outrigger to the boom
end