66 DESCRIPTION AND TRIAL OF THE 
In the after deck-house is a large lounge for the owner and guests. 
On the berth deck forward is the forecastle, next to which on the starboard side 
are staterooms for the steward and waiter, cook and mess boy; on the port side are 
a toilet, store-room and ice-box, and aft of these is the galley, extending the full 
width of the vessel. 
Aft of the machinery space and fuel oil-tanks are the owner’s and guests’ 
quarters consisting of two large staterooms extending the full width of the ship, 
four smaller rooms, a lobby on the port side, two bathrooms and two toilets. 
Boats.—The following boats are provided and carried on davits:—One 26-foot 
motor launch for owner, one 25-foot working motor launch, one 16-foot dinghy. 
Crew.—The crew consists of captain, mate, chief engineer, assistant engineer, 
steward, cook, cabin boy, mess boy, four sailors and three firemen. 
Boilers.—The boiler equipment consists of two Normand water-tube, express- 
type boilers with 8,184 square feet total heating surface and each fitted with 
eight oil burners of the mechanical atomizing type. The maximum pressure al- 
lowed is 260 pounds per square inch, although this pressure is never used, 3114 
knots being obtained with only 225 pounds at the high pressure turbine. 
Main Engines——The propelling machinery consists of Parsons turbines ar- 
ranged on two shafts, the high-pressure turbine being on the starboard while the 
low-pressure with the astern turbine is on the port shaft. These were designed for 
7,000 shaft horse-power at 900 revolutions per minute and are of the following 
dimensions :— 
H.P. turbine, L. P. turbine, 
inches inches 
Hengthioirotors echo ee aa reenact ee eee 82 57 9/16 
Diameter Of TOtor jae aceie cane et nee co teed bears 32 42 
IGN IS Ost GOOLE IEGIES bo pigotccobuodsbodeocdoonee 54 26 
The thrust bearings are forward of the turbines and are of the Parsons type. 
Main Condenser.—There is one main condenser of 4,163 square feet cooling 
surface. The construction is similar to those that have been put into destroyers 
built by the Bath Iron Works. The section is circular and contains 2,832 5£-inch 
tubes. The tubes are bent to a curve to allow for expansion, and the ends are rolled 
into the tube sheets, which are not parallel. A vacuum augmentor of the Parsons 
type is also provided. 
Propellers.—There is one three-bladed outboard turning propeller on each shaft. 
These are of manganese bronze cast solid. The blades are true screws, machined to 
pitch, and polished. The following are their dimensions :— 
Diameter juss: see ee ees 55 inches. 
Ritch. 34.05 otis uh de eae ee ne ae ee a 51 inches. 
Projected: :ateéaj 2 Gasacieey eset eens tee 1,422 square inches. 
Projected area = disk area .............. 
