552 FISHERIES OF THE UNITED STATES. [40] 



lower cabin companion-way is amidships, and a bath-room and closet on 

 the port side. 



Hurricane deck. — Forward of the foremast are the hoisting and reeling 

 engine, and the dredging boom, the heel of which is attached to the mast. 

 Abaft the mast, in succession, come the booby-hatch, covering the en- 

 trance to the main deck, the pilot-house, and captain's quarters. Then 

 follow the funnel, engine-room skylight, and deck laboratory, which 

 latter measures about 10 by 12 feet, has seven windows and one door, 

 ami is fitted up for microscopic work and study. Aft of the laboratory 

 the deck is occupied only by the mainmast, cabin sky -light, compass, and 

 rudder -head. 



Motive poicer. — As before stated, the Fish Hawk is furnished with two 

 propelling screws, right and left handed, one under each counter, which 

 enable her to turn around almost within her own length. The double 

 screw arrangement also greatly facilitates the handling of the vessel 

 when dredging. Each screw is driven by one inverted cylinder surface- 

 condensing engine, 22-inch diameter of cylinder, and 27-inch stroke of 

 piston. 



Boats. — There are four small boats, one of which is a steam cutter, of 

 the Herreshoff pattern, with a coaling capacity for twenty-eight hours' 

 steaming, at 6 knots per hour. 



Hoisting engine. — The hoisting engine used for dredging purposes is 

 of the trunk pattern, and was manufactured by Messrs. Copeland and 

 Bacon, of JSTew York. It has two cylinders, 8J inches in diameter and 9 

 inches stroke of piston, with cranks at right angles. It is fitted with the 

 common D slide valve worked by the Stephenson link. The main shaft 

 is forward of, and parallel to, the crank shaft, the two being connected by 

 means of gearing. Upon the main shaft is a loose drum, holding 1,000 

 fathoms of three-eighth inch steel wire rope, which can be thrown in 

 and out of action by means of a friction clutch. On each end of this 

 shaft there is a small fixed drum used for ordinary hoisting purposes. 

 There is also a friction brake for holding the load on the main drum, 

 and an automatic guide for coiling the wire neatly upon the drum. 

 Steam may be used either from the main or auxiliary boiler, and ex- 

 hausts into the escape pipe of main safety valve. The wire, after leav- 

 ing the drum, passes over a pulley at the masthead, returning under 

 another in the heel of the hoisting boom, through one at the outer end 

 of the boom, and thence to the bridle of the trawl. There is attached 

 to the pulley at the masthead an accumulator for relieving sudden 

 strains upon the rope. One man attends the engine, hoisting and low- 

 ering the trawl or dredge without the necessity of touching the rope 

 by hand. 



Dredging boom. — "The dredging boom is 36 feet long and 10 inches 

 in diameter ; the heel is secured to the foremast by a strong gooseneck, 

 5 feet above the deck. The forward end, when not in use, rests in a 

 cradle on an iron frame, in which the ship's bell is suspended. There 



