184 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
diameter at gammon-hole, 11 inches; main -boom, 40 feet long, diameter 10 inches; 
main-gaif, length, 32 feet; mizzen-boom, length, 25 feet; mizzen-gaft', length, 19 feet; 
two topsail-yards, the forward one 12 feet long and the after one 15 feet. 
The sails are made of canvas of the following weights : The mainsail and foresail 
are made of No. 1, extra G; small (or “storm”) jib, No, 0, extra G; second jib and 
mizzen, No. 1, ordinary; big jib, fore- topsail, and mizzen-staysail, No. 2; and mizzen- 
topsail of No. 3. The dimensions of the lower sails carried by the Zodiac are : Jib — 
luff, 49 feet; leach, 27 feet; foot, 27 feet. Stay-foresail — luff, 29 feet 3 inches; leach, 
23 feet 6 inches ; foot, 16 feet 6 inches. Mainsail — luff, 22 feet 6 inches ; leach, 45 
feet; foot, 32 feet 6 inches; head, 27 feet. Mizzen-staysail — luff (about), 22 feet 10 
inches ; leach, 20 feet ; foot, 17 feet 3 inches. Mizzen — luff, 19 feet 6 inches ; leach, 
32 feet; foot, 21 feet; head, 20 feet. 
These vessels are built to class 100 A1 at Lloyd’s. They are provided with accom- 
modations for eight men, there being four berths aft in the cabin for the officers, and 
four berths forward. The cabin and forecastle are fitted in a comfortable and substan- 
tial manner, are provided with side and deck lights, and each has a cooking-stove of 
an approved pattern. 
Nothing but the best material of its respective class is used in the construction 
of these trawlers. The butts of all plating, the stringers and keel, are planed and 
drawn hard together All butt strips are in, thicker than plates they connect, and 
all are double-riveted. The double lugs on the frames, for the attachment of stringers, 
are of the same scantlings as reverse bars, and fixed with at least three rivets. 
The liners behind the frames, at alternate strakes of outside plating, and wherever 
required, are made in one piece, so that they accurately fill the space in length, breadth, 
and thickness. All stringers are continued fore and aft, the bulkheads and other 
obstructions being notched and made good up to them. 
The keel and stem are made of bulb bar-iron 7^ by 1| inches. The stern frame 
is 7^ by 2^ inches. Tbe frames are angle-iron, 3 by 2J by ^ inches. The reverse 
bars are of angle-iron, 2^ by 2| by i^g- inches, every alternate one running up to the 
deck and above the bilge stringers. The floors are of plate-iron, 13 by inches. 
The keelson is made of two bars of angle-iron 4 by 3 by inches, running fore and 
aft, with a bulb bar 8 by inches, between, extending from fore bulkhead to 3 feet 
6 inches abaft of the aft engine-room bulkhead. The stern frames for bulwark are 4 
by 3 by angle-iron, with § plate knees riveted on the top for rail. The bilge stringers 
are composed of two bars of angle-iron 3 by 3 by inches, riveted back to back, and 
to double reverse bars, being properly tied at each end by a plate hook and riveted. 
The stringer between bilge and deck is made of two bars of angle-iron, 3 by 3 by 
inches riveted back to back, and to reverse bar and lugs, and is continued fore and 
aft. It is properly connected forward and aft by plate hooks between the bars and 
riveted. The main deck stringer is of plate iron 24 by inches wide, tapering to 
twenty inches at ends, fitted to skin with a 3 by 3 by inches angle bar which is 
riveted to the skin, and stringer carried fore and aft the vessel. The deck ties on the 
beams are 8 by | inches, and are carried fore and aft. The deck beams are made of 
angle-iron 5^ by 3 by inches, with welded ends riveted to each end with not less 
than four rivets. The carlins and fore-and-afters are all of the same dimensions as 
the beams; double fore-and-afters are placed where the bitts go through the deck, 
and plates are riveted on the top before the deck is laid, not less than i^g-inch thick. 
