Philippine Coast and Geodetic Survey vessel LCM 328. Beached for cleaning and painting of hull at Cavite.

Philippine Coast and Geodetic Survey vessel LCM 1907. Moored alongside river front of the Pasig River.

Philippine Coast and Geodetic Survey ship ORCHID (WAGL 240) . Anchored off quarantine anchorage, Manila Bay.

U.S. Coast and Geodetic Survey ship TULIP (AGL 249) . Prior to Philippine Independence, and after the end of World War II, this vessel was used by the U.S. Coast and Geodetic Survey for both training of Philippine Coast and Geodetic Survey and for operational surveys.

U.S. Coast and Geodetic Survey ship TULIP (AGL 249) . Prior to Philippine Independence, and after the end of World War II, this vessel was used by the U.S. Coast and Geodetic Survey for both training of Philippine Coast and Geodetic Survey and for operational surveys.

Lattice Topographical Map of the Reims "GEE" navigational system chain. This map with the overlay of the hyperbolic "GEE" navigational lines of position was used by Allied pilots for tactical and strategic bombing missions. This is an early example of a chart containing electronic navigation lines of position. This map was used on A-20 Havoc combat missions.

British Admiralty nautical chart overlayed with "GEE" navigational system hyperbolic lines of position. This chart was prepared in March 1944 and includes the strategic port of Le Havre, location of German submarine pens. This is among the earliest of electronic navigational charts.

Early Loran chart of the Norwegian Sea between Iceland and Norway produced by the Hydrographic Department of the British Admiralty.

Pamplet "The Coastline of the United States". This pamphlet was produced in 1975 and has been superceded.

Pamplet "The Coastline of the United States". This pamphlet was produced in 1975 and has been superceded.

A heliotrope - an instrument used to reflect sunlight for signaling purposes and to extend range of visibility between points for survey purposes. The instrument required constant attention from an operator because of the continually changing azimuth of the sun. The longest line known to have been observed with this type of instrument was 192 statute miles.

A heliotrope - an instrument used to reflect sunlight for signaling purposes. to extend range of visibility between points for survey purposes. The instrument required constant attention from an operator because of the continually changing azimuth of the sun. The longest line known to have been observed with this type of instrument was 192 statute miles.

Map showing route of PATHFINDER during World War II.

Narrative of the first voyage of the PATHFINDER

Narrative of the second voyage of the PATHFINDER with line drawings of the PATHFINDER during World War II and of the headquarters of the USN Hydrographer's Office at Naga Wan, Okinawa.

Diagram of electrotyping apparatus of the U.S. Coast Survey. This apparatus allowed for the unlimited duplication of copper plate copies of original engraved copper plate engravings. This in turn was a major step in the ability of the Coast Survey to mass produce nautical charts as each plate was good for only between 500 to1000 impressions on a printing press.

Trackline of Coast and Geodetic Survey ship PATHFINDER. Probably showing location of seamounts discovered along track.

Large seamount with at least 1500 fathoms of relief discovered by PATHFINDER in 1947.

Display showing classic leadline. NOAA Heritage Week display.

Projection ruling machine of the Coast and Geodetic Survey. This machine was used throughout World War II and saved thousands of man-hours that would have been used in making the map projections for thousands of map and chart products produced for the Allied forces.

CPS-98.

CPS-98.

CPS-98.

CPS-98.

CPS-98.

CPS-98.

Bob Lovett outside his tent.

CPS-98.

CPS-98.

CPS-98.

Welcome to Tombstone and Boothill Graveyard. CPS-98.

Some of the graves in Boothill Cemetery. CPS-98.

CPS-98.

CPS-98.

CPS-98.

CPS-98. Bob Lovett at his camp tent at Crystal Springs.

Extended continental shelf constraint lines. A country may use either constraint line to define the outer continental shelf: either 350 nautical miles seaward of the baseline, or 100 nautical seaward of the 2,500 meter depth contour (isobath).

NOAA uses echo-sounding technologies to measure water depths, find underwater physical features, and gather data on the characteristics of the seafloor.

Water level predictions and measurements from this new PORTS system were instrumental in navigating the USS NEW YORK safely under a bridge with only inches to spare. Air gap technology provided the needed information.

A hurricane hardened "NOAA Sentinel" water level observing station. This instrument system will provide real-time water level and meteorological data to help coastal authorities and the public prepare for, mitigate, and respond to storm tides. The Sentry system is designed to withstand a category 4 hurricane.

Geodesists continuously measure points on the Earth's surface to monitor various types of motion. By using GPS, geodesists can monitor the movement of a site 24 hours a day, seven days a week.

A map showing the march westward of the mean center of population of the United States from 1790 until the Census of 2010.

NOAA's National Geodetic Survey disc, commemorating the national center of population as calculated by the Census Bureau and measured by the National Geodetic Survey. The 2010 center of population was in Plato, Missouri.

A NOAA Navigation Response Team vessel. These boats feature both depth-finding and sidescan sonar systems for detecting dangerous obstructions on the ocean floor.

Kansas Historical Marker commemorating Meades Ranch, Kansas, as the primary geodetic station of the North American continent in the establishment of the North American horizontal datum of 1927. See: http://www.penryfamily.com/surveying/meadesranch.html

Kansas Historical Marker commemorating Meades Ranch, Kansas, as the primary geodetic station of the North American continent in the establishment of the North American horizontal datum of 1927. See: http://www.penryfamily.com/surveying/meadesranch.html

Replica of Meades Ranch 1891 triangulation mark placed by the Osborne, Kansas, Chamber of Commerce. Note that this disk refers to the Director of the National Geodetic Survey. See: http://www.penryfamily.com/surveying/meadesranch.html

Replica of Meades Ranch 1891 triangulation mark placed by the Osborne, Kansas, Chamber of Commerce. Note that this disk refers to the Director of the National Geodetic Survey. See: http://www.penryfamily.com/surveying/meadesranch.html

Meades Ranch 1891 bronze disk triangulation marker. See: http://www.penryfamily.com/surveying/meadesranch.html

Witness post North. Located North of Meades Ranch 1891. See: http://www.penryfamily.com/surveying/meadesranch.html