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

4950 thumbnail picture
Arrangement of sounding machine on PIONEER. Off of PIONEER
Southwestern Alaska Peninsula 1924
4951 thumbnail picture
Coast and Geodetic Survey sounding tube equipment. Hydrographic Manual 1931, Figure 17, p. 53
1931
4952 thumbnail picture
Shelter and equipment used in reading sounding tubes. Off of PIONEER
Southwestern Alaska Peninsula 1924
4953 thumbnail picture
Robert Williams with first Fessenden oscillator on the tug Susie D. First successful test of sonic system. Looking for icebergs but also found bottom
North Atlantic 1914
4954 thumbnail picture
Sonic sounding apparatus on the GUIDE. On the ship GUIDE
4955 thumbnail picture
Title page to manual - "The Submarine Fathometer". Fathometer invented by Herbert Grove Dorsey of the Sub Signal Corporation.
4956 thumbnail picture
Fathometer Filter. From the manual - "The Submarine Fathometer"
4957 thumbnail picture
Fathometer Oscillator. From the manual - "The Submarine Fathometer"
4958 thumbnail picture
Internal View of Fathometer. From the manual - "The Submarine Fathometer"
4959 thumbnail picture
Herbert Grove Dorsey - chief physicist of the Coast and Geodetic Survey. With Dorsey Fathometer - Dorsey came to work with C&GS in 1926
1930?
4960 thumbnail picture
Operator using Dorsey Fathometer with flashing light method. Merchant Marine Bulletin No. 9, May 1931
4961 thumbnail picture
Leo Otis Colbert with Dorsey Fathometer No. 3. The first effective shallow and deep water echosounder. Operator watched flashing light. On the ship OCEANOGRAPHER
United States East Coast
4962 thumbnail picture
808 fathometer transducer. Hydrographic Manual 1942. Called first portable sonic sounding device. First acoustic sounding device used on C&GS sounding boats for shallow water. First use of shallow water fathometer continuous records by C&GS
4963 thumbnail picture
Prototype "portable" depth recorder used as part of 808 fathometer system. Bulletin 13 of the Association of Field Engineers, 1939, p. 102
4964 thumbnail picture
"Echometre" record from S. S. De Grasse. Crossing over canyon near Georges Bank. Bulletin 4 of the Association of Field Engineers, Dec. 1931, p. 83
4965 thumbnail picture
Early graphic record from Sub Signal system. Off S.S. Yarmouth between Boston and Yarmouth. Bulletin 6 of the Association of Field Engineers, Dec. 1932, p. 60.
4966 thumbnail picture
Various bottom configurations plus bar check record. Hydrographic Manual 1942
4967 thumbnail picture
Various bottom configurations. Hydrographic Manual 1942
4968 thumbnail picture
Ship on Nantucket Shoals that was subsequently blown up. Fathometer record of remains of ship
4969 thumbnail picture
Expanded view of fathometer record of remains of ship
4970 thumbnail picture
Outer Nushagak Bay sand waves. Observed on PATHFINDER
4971 thumbnail picture
Hydrothermal spring discharging fluid off Pagan Island. Observed on NOAA Ship TOWNSEND CROMWELL
Pagan Island, Marianas Islands 1980?
4972 thumbnail picture
Running up to bank and loosing trace - then heading back out into bay. Record from PEIRCE launch in Delaware Bay 1985
Delaware Bay 1985
4973 thumbnail picture
Ragged appearing fathogram trace caused by coral heads. Record from PEIRCE launch off Eleuthera Island
Bahamas Islands, east side of Eleuthera Island 1984
4974 thumbnail picture
Near vertical dropoff at edge of reef on Eleuthera Island. Record from Ship PEIRCE off Eleuthera Island, Bahamas, 1984
4975 thumbnail picture
Ancient text demonstrating use of cross-staff
4976 thumbnail picture
MAYFLOWER mariner demonstrating use of cross-staff. At Plymouth State Park, Plymouth, Massachusetts
Plymouth, Massachusetts 1989
4977 thumbnail picture
Octant with simple artificial horizon in the form of a pendulum
4978 thumbnail picture
Plath sextant
1890?
4979 thumbnail picture
Captain Nemo taking a star sight from the deck of the NAUTILUS
4980 thumbnail picture
An octant
4981 thumbnail picture
Taking a sun sight. Navigating on the MALCOLM BALDRIGE
Atlantic Ocean 1985
4982 thumbnail picture
Hubert Paton taking a sun sight. Navigating on the LYDONIA
United States East Coast 1929
4983 thumbnail picture
George L. Anderson taking a sun sight. Navigating on the EXPLORER
Alaska, Bering Sea August 1952
4984 thumbnail picture
Joe Partington taking a morning sun sight. Robert Munson recording
North Pacific 1953
4985 thumbnail picture
Flash and sound ranging survey as practiced by Charles Wilkes. Shoot cannon - see flash - measure time till hear sound - determine distance
South Pacific atoll 1839
4986 thumbnail picture
Freddie Jeffries taking a sun sight. Navigating on the SURVEYOR
Pacific Ocean 1967
4987 thumbnail picture
Signal built on tree at Station WADE. Party off of HYDROGRAPHER
Gulf Coast 1915
4988 thumbnail picture
Signal at Isle Chandeleur. Party off of BACHE
Isle Chandeleur, Mississippi 1922
4989 thumbnail picture
Completed 100-foot signal. Note man at top. Party off of HYDROGRAPHER
1924
4990 thumbnail picture
Station Mud - built in 12 feet of water and no telling how much mud. Party off of Launch ELSIE III
Florida, Lake Okeechobee 1924
4991 thumbnail picture
Building a 100-foot tall hydrographic signal
4992 thumbnail picture
A completed hydrographic signal. Multiple colors for identification from offshore. Signal for OCEANOGRAPHER operations
Mid-Atlantic coast of the United States 1935?
4993 thumbnail picture
Building a large hydrographic signal. Multiple colors for identification from offshore. Party off of OCEANOGRAPHER
Mid-Atlantic coast of the United States 1935?
4994 thumbnail picture
On top of Station PERP. Party off of EXPLORER
Alaska, Kruzof Island, Southeast 1928
4995 thumbnail picture
Large hydrographic signal. Photograph in 1931 Hydrographic Manual
4996 thumbnail picture
Building a tri-pod type signal. Photograph in 1931 Hydrographic Manual
4997 thumbnail picture
Hydrographic signal as seen from sea
4998 thumbnail picture
A pole signal at Station Clarence Astro. Party off of EXPLORER
Seward Peninsula, Alaska 1950
4999 thumbnail picture
Tripod signal on south coast of American Samoa. Built by party off of SURVEYOR
American Samoa 1971

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Last Updated:
May 12, 2014