Fire Island West Base Signal, considered initial point of survey by Ferdinand Hassler, as all triangles observed by Hassler were ultimately tied into the Fire Island Base Line.

The old Fire Island Lighthouse which was dismantled for the present lighthouse in about 1858. The old lighthouse was 89-feet high.

The southwesterly view from Harrow. Hassler's carriage transporting him and the great theodolite is in the center of the image.

Hassler's carriage as seen at Harrow Hill.

North Carolina triangulation network designed for converting state to the first State Plane Coordinate System for surveyors.

Upon formation of NOAA, the venerable organization Coast and Geodetic Survey ceased to exist except in the memory of those who served. Painting over the name Coast and Geodetic Survey and replacing it with NOAA on the NOAA Ship RESEARCHER.

A nostalgic Clarence E. "Pete" Pedersen cartoon of hydrographic surveying in Alaska.

Article on tide predictions written for Air Weather Service Bulletin detailing World War II tide products. Title page, p. 26 and 27. Details work and uses of tide predictions made by Coast and Geodetic Survey.

Article on tide predictions written for Air Weather Service Bulletin detailing World War II tide products. Pages 28 and 29. Details work and uses of tide predictions made by Coast and Geodetic Survey.

Article on tide predictions written for Air Weather Service Bulletin detailing World War II tide products. Page 30. Details work and uses of tide predictions made by Coast and Geodetic Survey.

Magnifying glass showing detail of copper plate engraving of mid-Nineteenth Century chart of Half Moon Bay, California.

Display panel detailing the contribution of Ferdinand Rudolph Hassler, the founder of the Coast and Geodetic Survey, to the American science community and the NOAA of today. This was a display set up in Alexandria,.Virginia, during the 2007 visit of the NOAA Ship THOMAS JEFFERSON to the Washington, D.C. area to commemorate 200 Years of NOAA Science, Service, and Stewardship.

HYPACK system display shown by NOAA Ship THOMAS JEFFERSON during open house in Alexandria, Virginia.

Survey technician operating survey system on launch. NOAA Ship THOMAS JEFFERSON.

Local news crew filiming open house displays of NOAA ShipTHOMAS JEFFERSON during 2007 visit to Washington, D.C., area.

Recovering survey instrument after deployment from NOAA Ship THOMAS JEFFERSON survey launch.

Recovering survey instrument after deployment from NOAA Ship THOMAS JEFFERSON survey launch.

Hopefully no mariners will end up on the rocks because of lack of attention to nautical charts.

Relief map embossed on a sheet of aluminum by Braund Reliefograph.

Using Braund Reliefograph to construct aluminum mold of relief map.

Master relief model of topographic map ready for reproduction with plastic.

Plastic quantity production relief map ready for service.

Anaglyphic map showing portion of Carlisle Quadrangle. This map showed in 3-D with filter glasses.

Portion of pictorial relief map of Carlisle Quadrangle.

Installing a tide gage. Jensen launch provided transportation for divers and dive equipment.

Ensign Matthew Forney sheltering from the elements during tide gage installation.

Divers at low tide during tide gage installation. The staff and tide gage orifice have to be covered at low water. This was moderate low tide. Note mussels and thence barnacles marking high tide line on rock face.

Divers at low tide during tide gage installation. The staff and tide gage orifice have to be covered at low water. This was moderate low tide. Note mussels and thence barnacles marking high tide line on rock face.

Lieutenant Commander David Zezula, standby diver, while Jensen and RHIB launches wait offshore during dive operations. NOAA Ship FAIRWEATHER is anchored across Blue Mouse Cove from operations.

Jensen launch and RHIB supporting dive operations. Divers communing with large starfish.

View from aft during survey operations in Tidal Inlet, Glacier Bay. Life raft secured on top of cabin. One of two GPS antennas in right top center of image.

View down starboard side of survey launch underway in Tidal Inlet.

View looking aft through sidescan A-frame mounted on Jensen Launch. Flag reading RESEARCH is a permit requirement even for other government agencies to work within Glacier Bay National Park.

Coxswain operating Jensen survey launch. His left display is a repeater of the survey system display showing 94.46 meter depth. The right display is also depth reading in feet.

Survey system display showing data logging display on left; real-time multi-beam depth display in center, and right is multi-beam pattern showing bottom profile and individual depths for each beam.

Coxswain operating Jensen survey launch. His left display is a repeater of the survey system display showing 98.29 meter depth. The right display is also depth reading in feet.

Survey system display showing data logging display on left; real-time multi-beam depth display in center, and right is multi-beam pattern showing bottom profile and individual depths for each beam.

Venerable Coast Survey tradition of launch lunch during tide gage installation

Ensign Patricia Raymond at Blue Mouse Cove tide gage installation. Float coat issued by NOAA Corps but grundens and boots are personal gear. Mussels, barnacles, and algae mark various stages of tides.

Tide gage installation. Ensign Matthew Forney in hat, student intern Katrina Wiley, and assistant survey technician David Moehl.

Tide gage installation. Ensign Matthew Forney in hat, student intern Katrina Wiley, and assistant survey technician David Moehl.

RHIB and Jensen Launch at Composite Island supporting tide gage installation. Able seaman Christina Mallory waits to offload gear from boats as needed.

Tide gage installation at Blue Mouse Cove. Black plastic tubing supplies nitrogen gas to bubbler tide orifice to determine water pressure which is convertible to a height of tide. Intern Katrina Wiley and Ensign Steven Loy helping with installation.

RHIB supporting tide gage installation at Blue Mouse Cove.

Jensen survey launch operating off Big Konuji Island in the Shumagin Islands.

Assistant survey tech Bart Nuckols on left, general vessel assistant Kirk Loeffler, and survey tech Weston Renoud after packing to GPS recording site and breaking down instrument. Cairn was built to mark site for future users.

Ensign Patricia Raymond packing out tripod used for GPS antenna on Little Konuji .

Packing down from Little Konuji after breaking down GPS antenna used for recording correctors for launch survey work. The data was stored on site and interrogated by the ship daily to obtain correctors.

Coast and Geodetic Survey sign post asking folks to not disturb a survey marker.

World War II illustration showing Lambert Projection in Mediterranean area as possible base map for aeronautical charts.