2100 | |
Near vertical dropoff at edge of reef on Eleuthera Island. Record from Ship PEIRCE off Eleuthera Island, Bahamas, 1984 |
|
2101 | |
Earliest surviving astrolabe - constructed approximately 927 A. D. Resided in the Kuwait National Museum prior to Gulf War. From Scientific American, April 1986 |
|
2102 | |
Astrolabe used by Samuel de Champlain. From America' s Beginnings, p. 25 |
|
2103 | |
Determining Latitude from the shore. From Robert Dudley's Secrets of the Sea - 1649 |
|
2104 | |
A mariner's compass with alidade for determining azimuth |
|
2105 | |
Determining Latitude |
|
2106 | |
Ancient text demonstrating use of cross-staff |
|
2107 | |
MAYFLOWER mariner demonstrating use of cross-staff. At Plymouth State Park, Plymouth, Massachusetts |
Plymouth, Massachusetts 1989 |
2108 | |
Octant with simple artificial horizon in the form of a pendulum |
|
2109 | |
Plath sextant |
1890? |
2110 | |
Captain Nemo taking a star sight from the deck of the NAUTILUS |
|
2111 | |
An octant |
|
2112 | |
Taking a sun sight. Navigating on the MALCOLM BALDRIGE |
Atlantic Ocean 1985 |
2113 | |
Hubert Paton taking a sun sight. Navigating on the LYDONIA |
East Coast of the United States 1929 |
2114 | |
George L. Anderson taking a sun sight. Navigating on the EXPLORER |
Bering Sea August 1952 |
2115 | |
Joe Partington taking a morning sun sight. Robert Munson recording |
North Pacific 1953 |
2116 | |
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 |
2117 | |
Freddie Jeffries taking a sun sight. Navigating on the SURVEYOR |
Pacific Ocean 1967 |
2118 | |
Signal built on tree at Station WADE. Party off of HYDROGRAPHER |
Gulf Coast 1915 |
2119 | |
Signal at Isle Chandeleur. Party off of BACHE |
Isle Chandeleur, Mississippi 1922 |
2120 | |
Completed 100-foot signal. Note man at top. Party off of HYDROGRAPHER |
1924 |
2121 | |
Station Mud - built in 12 feet of water and no telling how much mud. Party off of Launch ELSIE III |
Lake Okeechobee, Florida 1924 |
2122 | |
Building a 100-foot tall hydrographic signal |
|
2123 | |
A completed hydrographic signal. Multiple colors for identification from offshore. Signal for OCEANOGRAPHER operations |
Mid-Atlantic coast of the United States 1935? |
2124 | |
Building a large hydrographic signal. Multiple colors for identification from offshore. Party off of OCEANOGRAPHER |
Mid-Atlantic coast of the United States 1935? |
2125 | |
On top of Station PERP. Party off of EXPLORER |
Kruzof Island, Southeast Alaska 1928 |
2126 | |
Large hydrographic signal. Photograph in 1931 Hydrographic Manual |
|
2127 | |
Building a tri-pod type signal. Photograph in 1931 Hydrographic Manual |
|
2128 | |
Hydrographic signal as seen from sea |
|
2129 | |
A pole signal at Station Clarence Astro. Party off of EXPLORER |
Seward Peninsula, Alaska 1950 |
2130 | |
Tripod signal on south coast of American Samoa. Built by party off of SURVEYOR |
American Samoa 1971 |
2131 | |
Station Pic at west end of Picara Point. Building party off of WHITING |
Picara Point, St. Thomas, U.S. Virgin Islands 1975 |
2132 | |
Station Pic at west end of Picara Point. Building party off of WHITING |
Picara Point, St. Thomas, U.S. Virgin Islands 1975 |
2133 | |
Building signal at Station Out. Building party off of WHITING |
Outer Brass Island, U.S. Virgin Islands 1975 |
2134 | |
The way to Station Can. Building party off of WHITING |
Congo Cay, U.S. Virgin Islands 1975 |
2135 | |
Signal and navigation trisponder at Station Can. Installation by party off of WHITING |
Congo Cay, U.S. Virgin Islands 1975 |
2136 | |
Signal and navigation trisponder at Station Can. Installation by party off of WHITING |
Congo Cay, U.S. Virgin Islands 1975 |
2137 | |
Station Hans at south end of Hans Lollik Island. Building party off of WHITING. Note century plants and desert aspect of island |
Hans Lollik Island, U.S. Virgin Islands 1975 |
2138 | |
Triangular hydro signal. Building party off of PATHFINDER |
Hawaii 1970 |
2139 | |
Hydro signal being built for calibration of Raydist system. Building party off of NOAA Launch 1257. Glenn Hendrix kneeling, Steve Lloyd standing |
Cape San Blas, Florida 1977 |
2140 | |
Signal building party off of PEIRCE |
September, 1972 |
2141 | |
Large tripod signal being built. Building party off of PEIRCE |
September, 1972 |
2142 | |
Signal building party in Southeast Alaska. Party off of PATHFINDER |
Southeast Alaska 1971 |
2143 | |
Signal in Prince William Sound |
Prince William Sound area |
2144 | |
Signal in Prince William Sound |
Prince William Sound area |
2145 | |
Signal in Penobscot Bay. Signal built by party off of PEIRCE |
Penobscot Bay, Maine 1985 |
2146 | |
Dismantling the signal at Station Out, Thatch Cay. Cleaning up at the end of a project. Lt.(j.g.) Mike Kuhl cutting wire securing signal |
Thatch Cay, U.S. Virgin Islands 1975 |
2147 | |
Flags on bell and whistle buoys. Using harbor buoys for signals for survey work off the BACHE. Black flags showed up best |
Southeast Coast of United States 1915 |
2148 | |
Planting a survey signal buoy. Off LYDONIA or NATOMA |
East Coast of United States 1929? |
2149 | |
Constructing a floating buoy signal. Buoy in place. For use by East Coast wiredrag party |
East Coast of United States 1917 |