4122 HYDROGRAPHIC MANUAL PaGE 320 



The galley and pantries are completely outfitted with steam tables, cupboards, cabinets, etc., 

 whose exposed metal parts are generally of Monel metal, as are also the sinks and bulkheads back 

 of the galley range and around the steam pressure cooker. The galley and pantry equipment includes 

 an oil-burning galley range, an electric range, refrigerators and water coolers, electric mixer, electric 

 vegetable peeler, etc. 



The refrigeration system is of the automatic direct-expansion type, using Freon as a refrigerant. 

 The entire interior of the storage spaces is lined with Monel metal, which is sanitary, easily cleaned, 

 and lasting. Glass wool in block and blanket form is used to insulate the refrigeration spaces. 



A combined carbon-dioxide fire-extinguishing and smoke-detecting system with smoke detectors 

 at the CO2 outlets, provides fire protection for machinery spaces and in dangerous fuel compartments. 

 In addition, there are 42 thermostatic detectors, connected to the fire-alarm system, provided in the 

 various storerooms, lockers, and hold spaces on the upper, main, and lower decks. 



The water system is served by two duplex steam, fire, and wrecking pumps. Portable fire 

 extinguishers, fire axes, breathing apparatus, flame safety lamps, etc., are provided at strategic places. 

 Magazine flooding is provided. 



The ship is equipped with several types of interior communication. In addition to the usual 

 voice tubes, call bells, and telegraphs, there is a loud-speaker system designed to provide for general 

 announcements from the pilothouse to various parts of the ship, to provide two-way conversation 

 between the pilothouse and any of the talk-back speaker stations, and to provide for the amplification 

 of an alarm siren over all of the loud-speaker system. A sound-powered, selective ringing, marine-type 

 telephone system is installed to provide interior communication throughout the ship, with an acoustic 

 telephone booth installed in the engine room. 



4122. Equipment of the ''Explorer" 



The bridge and pilothouse of the ship Explorer are equipped with navigation and survey in- 

 struments of the latest type and design for accuracy and precision. The Sperry gyrocompass system 

 comprises a master compass, a steering repeater, two bearing repeaters, a radio-direction repeater, 

 a course recorder, and a gyro pilot. The magnetic compasses, compensating binnacles, and a special 

 1 -meter rangefinder to fit the gyro repeater on the flying bridge, are standard United States Navy 

 equipment. 



Three echo-sounding instnmients — a Dorsey Fathometer No. 3, a 312 Fathometer, and a Veslekari 

 depth recorder — are installed in the pilothouse. Two electric sounding machines, one an LL-type 

 using stranded wire and the other a deep-sea type using piano wire, are installed, one on each side of 

 the bridge deck, and are used for vertical casts and to obtain bottom samples and water specimens. 

 Among other electric survey and navigation equipment in or controlled from the pilothouse are 

 two submerged Meridian logs, a tafi"rail log, a whistle, and a synchronized clock system. 



The installed radio equipment includes two radio transmitters for communication by code, an 

 intermediate-frequency set and a short wave set; an automatic SOS alarm; a ship-to-shore radio tele- 

 phone; and a radio direction finder. In addition there are two types of radiotelephones for use by 

 detached parties; one is semiportable for use by launch parties and shore camps, and the other is 

 portable for itinerant survey parties for communication with each other. The latter is intended for 

 shoulder or saddle packing through rough terrain and in mountain climbing. The entire assembly 

 of transmitter, receiver, power supply, and dry battery power source is contained in one carrying case. 

 The transmitter is crystal-controll(>d and is designed so that it can be set up or dismantled in 3 minutes 

 by personnel without technical radio knowledge. 



Survey equipment includes a taut-wire apparatus for measuring water traverses with great 

 accuracy, and sono-radio buoys for use in R.A.R. controlled surveys. 

 The launches and small boats carried by the Explorer are as follows: 



Four Diesel-powered 30-foot launches. 



Two gasoline-powered 24-foot whaleboats. 



Two nonmagnetic 24-foot whaleboats. 



Two 16-foot dinghies. 



Several Cape Cod skiffs and fisherman-tj^pe dories. 



The drafting room is equipped with four drafting tables, two typewriter desks, a file case, and a 



survey sheet rack. Each drafting table consists of a wooden table top permanently secured to the 



top of a metal case containing numerous drawers and compartments of various dimensions to hold 



charts, Whatman sheets, aluminum-mounted topographic sheets, small drafting instruments and 



