DEEP-SEA EXPLORATION. 
271 
BOATS. 
Tlie Albatross carries eight boats, as follows: 
Herreshoff steam cutter: The ITerreshoff steam cutter is 20 feet 0 inches in length, 
7 feet beam, and 3 feet 10 inches in depth, with scpiare, tubulous boiler and com- 
pound engine, cylinders 0 inches and 31- inches in diameter and 7-inch stroke, develop- 
ing 16 horsepower witb 100 pounds of steam. It lias a keel condenser, and carries an 
average of 26 inches vacuum. The bunkers hold 1,100 pounds of coal, and the tresh- 
water tank, Avhich is jilaced directly underneath the boiler, has a capacity of 42 gallons, 
sufficient for three days’ steaming. Tlie hull and engine are of the best material and 
Avorkmanship. Water-tight compartments at bow and stern have sufficient buoyancy 
to prevent sinking in case the boat is lilled with water. TAvelve persons can be seated 
comfortably in the stern sheets. In addition to steam poAA^er, the boat is provided 
with sliding guuter masts and sails, schooner rigged, and makes good speed under 
sail alone. It is cutter build, with square stern, 
coppered bottom, weighs 6,124 pounds, including 
coal and Avater, and has a speed of 8 knots. 
Steam gig : Built also by the Herreshoff Manu- 
facturing Company. Twenty-five feet in length, 
5 feet 2 inches beam, 3 feet 34 inches depth. 
A square, tubulous boiler, compouud engine, 4J 
inches and 2^ inches diameter of cylinders, and 
5-inch stroke, developing 7J horsepower with 100 
liounds of steam. It has the general form of a 
whaleboat, is double planked, siiruce inside run- 
ning diagonally, and mahogany outside running 
fore and aft. Both layers are bound together by 
brass screws at short intervals, making the struc- 
ture unusually strong and light. There are Avater- 
tight compartments at bow and stern of sufficient 
capacity to float boat and crew in case it is filled 
with water. The total weight, including coal and 
Avater, is 2,907 pounds. 
The bunkers hold 450 pounds of coal, and the 
fresh-water tank under the boiler carries 15 gal- 
lons, enough for two days’ steaming. The ordinary- 
speed of the boat is about 7 knots, although it can 
be driA^en to 8 for a short time. Seven persons ^ t-, • jr ^ 
^ Cut 9. — Engine of steam cutter, 
can be seated comfortably in the stern sheets. 
The location of the propeller under the bottom, about half the length from the 
stern, is a peculiar feature of this boat. It is so arranged that by a universal joint in 
the shaft the iiropeller can be hoisted and lowered, and when in the former position it 
does not iiroject below the keel. When in use it is lowered, and no matter how heavy 
the sea it is always submerged; thus racing is entirely avoided. The advantages of 
this system are not particularly apparent in smooth water, but her performance in a 
sea way is remarkable. The gig is provided with a sliding gunter mast and sail, and 
makes good time under sail alone. 
Steam can be raised in both cutter and gig in from 3 to 5 minutes. 
