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NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Catalog of Images

5400 thumbnail picture
Signal party white-washing rock. Party off of EXPLORER
Rudyerd Bay, Southeast Alaska 1931
5401 thumbnail picture
White-washing rock. Party off of LESTER JONES
5402 thumbnail picture
Preparing white-wash for marking signal. At Station ACT on Amchitka Island. Party off of EXPLORER
Alaska, Amchitka Island, Aleutian Islands 1949
5403 thumbnail picture
Taking sextant angles for positioning vessel.
5404 thumbnail picture
Working together for a three-point sextant fix. Note horizontal attitude of sextants
Southeast Alaska 1916
5405 thumbnail picture
Calibrating Raydist by using three-point sextant fix. Initial tests of Raydist off of SOSBEE
Tampa Bay area, Florida 1954
5406 thumbnail picture
Launch hydrography three-point sextant fix. Surveying lagoon at Kwajalein Island. Party off of PIONEER
Kwajalein Island, Pacific 1960
5407 thumbnail picture
Launch hydrography three-point sextant fix. Surveying in vicinity of Kalgin Island. Party off of SURVEYOR
Alaska, Cook Inlet, Kalgin Island 1967
5408 thumbnail picture
Wharton and Jeffries taking three-point sextant fix. Surveying in vicinity of Kalgin Island. On SURVEYOR
Alaska, Cook Inlet, Kalgin Island 1967
5409 thumbnail picture
Taking three-point sextant fix with check angle. Calibrating electronic navigation system. Third man searching for signal. On NOAA Launch 1255
1981
5410 thumbnail picture
Taking three-point sextant fix with check angle. Calibrating electronic navigation system. On NOAA Launch 1255
1981
5411 thumbnail picture
Checking index error of sextants prior to conducting launch hydrography.
5412 thumbnail picture
The tools of the trade for navigating during launch hydrography. Metallic and plastic three-arm protractors for plotting three-point fixes. Sextant in background. 1931 Hydrographic Manual
5413 thumbnail picture
Checking boatsheet during wiredrag survey of Mitchell Jordan Reservoir. Plastic three-arm protractor for plotting fixes barely visible under hand. Surveying reservoir for seaplane landing site during WWII ferrying operations. Wiredrag party of Max G. Ricketts
Alabama, Mitchell Jordan Reservoir 1942
5414 thumbnail picture
Plotting three-point sextant fix with metallic three-arm protractor. On the FATHOMER
Philippines 1928
5415 thumbnail picture
Manual plotting of three-point sextant fix. Using plastic three-arm protractor
5416 thumbnail picture
Geometry of the three-point sextant fix. Diagram shows shoreline, stations, and angles measured. 1931 Hydrographic Manual
5417 thumbnail picture
Graphic of various combinations of strong and weak three-point fixes. Hydrographic Manual
5418 thumbnail picture
Graphic demonstrating Radio Acoustic Ranging (RAR). Developed in 1923, RAR was the first non-visual navigation system. Combined velocity of sound in water with radio to obtain fix.
Georges Bank 1931
5419 thumbnail picture
Planting a hydrophone anchor with the cable attached. On the GUIDE. Hydrophone would pick up sound from RAR TNT explosion.
Oregon, Cape Blanco area 1924
5420 thumbnail picture
Cable drum being pulled by horses across dunes. Cable lead to offshore hydrophone for Radio Acoustic Ranging. On the GUIDE
Oregon, Cape Blanco area 1924
5421 thumbnail picture
Electronics setup for Radio Acoustic Ranging shore station. Navigation station for the GUIDE
Oregon, Cape Blanco area 1924
5422 thumbnail picture
Planting anchor for Radio Acoustic Ranging hydrophone. Must have been warm - note bare foot helping push anchor away from ship
5423 thumbnail picture
A new type of hydrophone block for Radio Acoustic Ranging. On the GUIDE
San Clemente Island area, California 1925
5424 thumbnail picture
Transferring the hydrophone block and cable to launch for planting. Radio acoustic ranging operations on the GUIDE
San Clemente Island area, California 1925
5425 thumbnail picture
Launch laying the cable from hydrophone to the shore station. Radio acoustic ranging operations on the GUIDE
San Clemente Island area, California 1925
5426 thumbnail picture
Shore Radio Acoustic Ranging Station on San Clemente Island. Radio acoustic ranging operations on the GUIDE
San Clemente Island area, California 1925
5427 thumbnail picture
Radio operator at work at Radio Acoustic Ranging shore station KGHS. Radio acoustic ranging operations on the SURVEYOR
Alaska, Kodiak Island area 1929
5428 thumbnail picture
The first Odessey Protractor. This instrument was used to plot intersecting ranges from two RAR stations. Invented while Herman Odessey attached to DISCOVERER. Variations of this instrument were used for plotting positions for over 60 years
1929
5429 thumbnail picture
Radio Acoustic Ranging bomb making. TNT bombs were sound source for RAR. RAR work on OCEANOGRAPHER
Georges Bank, New England coast 1930
5430 thumbnail picture
Radio Acoustic Ranging bomb making. TNT bombs were sound source for RAR. RAR work on OCEANOGRAPHER
Georges Bank, New England coast 1930
5431 thumbnail picture
Radio Acoustic Ranging - igniting the bomb and timing fuse. TNT bombs were sound source for RAR. RAR work on OCEANOGRAPHER
Georges Bank, New England coast 1930
5432 thumbnail picture
Timing the fuse on a quart bomb during RAR operations. TNT bombs were sound source for RAR. RAR work on OCEANOGRAPHER
Georges Bank, New England coast 1930
5433 thumbnail picture
Quart bombs exploding during RAR operations. TNT bombs were sound source for RAR. RAR work on OCEANOGRAPHER
Georges Bank, New England coast 1930
5434 thumbnail picture
A schematic view of RAR and echo-sounding. Diagram in public information brochure
1934
5435 thumbnail picture
The Launch PRATT - an RAR hydrophone boat. Worked as station boat while HYDROGRAPHER conducted sounding operations
Louisiana, Morgan City July 1935
5436 thumbnail picture
A sono-radio-buoy developed to eliminate need for station boats. RAR operations in the Gulf of Mexico. Forerunner of Anti-submarine warfare sonobuoys
1936
5437 thumbnail picture
Electronics package of sono-radio-buoy for RAR. This instrument was developed by Almon Vincent on the GUIDE. Forerunner of Anti-submarine warfare sonobuoys
1936
5438 thumbnail picture
Sono-radio-buoy for RAR work on pier --- Almon Vincent design. Forerunner of anti-submarine warfare sonobuoys
5439 thumbnail picture
Almon Vincent tuning the antenna circuit on sono-radio-buoy. RAR work on the GUIDE
1936
5440 thumbnail picture
Railroad car couplers used to anchor RAR hydrophone. On the OCEANOGRAPHER
1939
5441 thumbnail picture
Vincent type sono-radio-buoy being deployed from the GUIDE. RAR operations on north coast of Unimak Island
North coast of Unimak Island, Aleutian Islands 1939
5442 thumbnail picture
Sono-radio-buoy developed by Almon Vincent for RAR work. Buoy deployed from the GUIDE
1936
5443 thumbnail picture
Sono-radio-buoy deployed in the Aleutians for RAR work. Buoy deployed from the PIONEER
Islands of the Four Mountains, Aleutian Islands 1940
5444 thumbnail picture
Inspecting the electronics package of a sono-radio-buoy. RAR work on the OCEANOGRAPHER
North Carolina coast 1940
5445 thumbnail picture
Holding RAR bomb. In 1944 issue of the magazine "The Military Engineer"
5446 thumbnail picture
RAR bomb being exploded astern of EXPLORER. In vicinity of Islands of the Four Mountains
Islands of the Four Mountains, Aleutian Islands 1940
5447 thumbnail picture
RAR bomb being exploded astern of GUIDE. North shore of Unimak Island
Unimak Island, Aleutian Islands, Alaska 1940
5448 thumbnail picture
"Gee" or Shoran hyperbolic navigation lattice over France. Allies installed electronic navigation systems to guide bombers. Adapted to hydrographic survey needs at end of war
France, Eastern 1944
5449 thumbnail picture
Front page of first report detailing tests of Shoran by C&GS. Clarence Burmister spearheaded efforts to adapt Shoran to survey use. Tests run in vicinity of Attu Island
Alaska, Attu Island, Aleutian Islands 1945

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Last Updated:
June 10, 2016