Electronics container for Raydist transmitting antenna.

Tower being erected for navigation station

Bubbler tide gauge installation

Installing a bubbler tide gauge

Analog tide record obtained by bubbler tide gauge.

Range Azimuth Navigation from offshore light tower. Chart Evaluation Survey

Leveling can be difficult on a shear rocky shoreline.

Water level gauge on the Great Lakes.

Water level gauge on the Great Lakes.

Tide staff installation on north side of Pillsbury Sound.

Engraving of old C&GS building.

Moxo in his red racer. Horned toad racers in the Southwest

Ari passes on Moxo's car. Horned toad racers in the Southwest

Earthen pot at Station JINSTID. Similar to early earthenware cones devised by Ferdinand Hassler

Heliotrope used for directing sun's rays to distant observer. Used to illuminate station site so far distant observer could measure angles

C. M. Durgin and P. C. Doran inspecting record book. Looking for source of error in computations

Series of photos getting to mountain peak by horse and foot. Working here and there in Idaho, Montana, and Alaska. The poem is from Rudyard Kipling's "Screw-guns" an ode to a 2.5 inch weapon used for mountain fighting.

Series of photos getting to mountain peak by horse and foot. Working here and there in Idaho, Montana, and Alaska. The poem is from Rudyard Kipling's "Screw-guns" an ode to a 2.5 inch weapon used for mountain fighting.

Plane table party working near Mt. Desert, Maine. Sketch by Chief of Party Cleveland Rockwell

Plane table work on an exposed Alaska coast.

Whitewashing Station Act on Amchitka Island. Party off of EXPLORER

Remains of helicopter after crashing in Lake at Palm Springs Camp. Party of Walter Helm

"Bush Pilot" taking off with a 727 from the dirt strip at Kotzebue, Alaska. A short time after the runway was paved

A Hercules C-130 aircraft lands at the South Pole. Helping supply the geophysical and climatic monitoring facility

Colored version of Coast and Geodetic Survey emblem

Black and white version of Coast and Geodetic Survey emblem

Using a little extra body english to get that observation during tidal bench mark leveling operations on a rocky shore.

Computer and electronics racks mounted in the NOAA Ship RUDE

Survey gear on bridge of NOAA Ship RUDE.

A computer generated depth display of an elongate basin on the NOAA Ship RUDE and a sidescan image in lower right. The basin shown on the upper left is one of many in Penobscot Bay.

Jensen aluminum survey launch off NOAA Ship RAINIER

NOAA Ship RUDE tied up at pier.

Article on NOAA Ship RUDE in upper reaches of Penobscot Bay, Maine.

Article on NOAA Ship RUDE in upper reaches of Penobscot Bay, Maine.

The contract survey vessel QUICKSILVER underway

Bridge and plot table of NOAA Ship RUDE

Sidescan sonar record of rocky outcrops

Sidescan sonar record of shipwreck. The track of the towfish went directly over the wreck.

Sidescan sonar image of shipwreck

Sidescan sonar record of what appears to be a sunken LCVP

Sidescan sonar record of shipwreck

Multi-beam 3-D image of what appears to be a sunken LCVP. The same feature that is in image theb4047.

Multi-beam 3-D image of sunken vessel. Lower resolution multi-beam system than what is now available.

The main ship channel in upper Chesapeake Bay. This imaginative display uses both color and printed depths draped on a 3-D image.

An enlarged view of image theb4051. The main ship channel in upper Chesapeake Bay. This imaginative display uses both color and printed depths draped on a 3-D image.

Shaded relief model of seafloor showing pronounced sand wave field on left of image. Unclear if raised areas to right are artifacts or dredge spoil dump areas or some other man-made features.

Chesapeake Bay Diamond Shoal Project. This project was for the purpose of mapping oyster habitat for the Maryland Department of Natural Resources. This continued a function of the Coast Survey that began in the 1870's with mapping the oyster beds of Maryland, Virginia and many of the eastern seaboard and Gulf Coast states.

Chesapeake Bay Diamond Shoal Project. This project was for the purpose of mapping oyster habitat for the Maryland Department of Natural Resources. This continued a function of the Coast Survey that began in the 1870's with mapping the oyster beds of Maryland, Virginia and many of the eastern seaboard and Gulf Coast states.

This image is a false-color image of backscatter intensity over Diamond Shoal which gives an indication of bottom materials. The backscatter is from sidescan sonar emissions.

Sidescan sonar imagery was combined with multi-beam sounding data to produce 3-D reflectivity maps which were indicative of bottom materials.