Similar to 沿岸測量部

NOAA Commissioned Officer Corps

11 (number)

13 (number)

Hydrography

Nautical chart

CTD (instrument)

United Kingdom Hydrographic Office

OpenSeaMap

Echo sounding

Electronic navigational chart

International Hydrographic Organization

State Oceanic Administration

Automatic radar plotting aid

Bathymetry

Sounding lead

General Bathymetric Chart of the Oceans

Chartplotter

Electronic Chart Display and Information System

Navionics

Navico