Undersea feature names
The GEBCO Sub-Committee on Undersea Feature Names (SCUFN) maintains and makes available a digital gazetteer of the names, generic feature type and geographic position of features on the seafloor.
The gazetteer is available to view and download via a web map application, hosted by the International Hydrographic Organization Data Centre for Digital Bathymetry (IHO DCDB) co-located with the US National Centers for Environmental Information (NCEI).
The GEBCO Gazetteer of Undersea Feature Names is in a maintenance period, due to recent system upgrades. Back to normal operational functioning expected by 31 March 2017. Apologies for the temporary inconvenience (Update as of 20 March 2017).
The data are available in a number of formats including spreadsheet, shapefile, KML, WMS and ArcGIS layer and can be accessed as a REST-style API.
Name proposals can be submitted to SCUFN for consideration for inclusion in the gazetteer.
Find out about
- How to view and download data from the gazetteer. See the application’s help file for information on how to access the data in KML, WMS, ArcGIS layer and REST-style API formats.
- Data set acknowledgement
- The role of SCUFN
- Guidelines and nomenclature
- Undersea feature terms and definitions web search
- Submitting name proposals
- Reports of SCUFN meetings
Data set acknowledgement
Please include the following citation when data from the gazetteer are used or reproduced in reports, presentations and other products:
IHO-IOC GEBCO Gazetteer of Undersea Feature Names, www.gebco.net
The role of SCUFN
The setting up of SCUFN arose from the need for a uniform policy for the handling of geographical names and the standardisation of undersea feature names. This was done in order to achieve consistent naming on bathymetric maps and nautical charts.
The role of SCUFN is
- To define the nomenclature used for undersea features, e.g. canyon, plateau, fracture zone, etc., as well as naming guidelines
- To consider and decide on names that have been submitted to the Sub-Committee
All names selected by SCUFN are contained in the IHO-IOC GEBCO Gazetteer of Undersea Feature Names, IHO publication B-8.
The secretariat of SCUFN is provided by the Secretariat of the International Hydrographic Organization, Monaco, where the gazetteer database is maintained.
Find out about SCUFN's meetings.
Guidelines and nomenclature
Guidelines and nomenclature are contained in IHO-IOC Publication B-6 "Standardisation of Undersea Feature Names".
A digital copy of B-6 is available in a number of languages:
- English/French (2.3 MB)
- English/Spanish (2 MB)
- English/Korean (408 KB)
- English/Japanese (815 KB)
- English/Russian (771 KB)
- English/Chinese (4 MB)
Romanization of Russian Geographical Names (UN System)
Undersea feature terms and definitions web search
Access the undersea feature terms and definitions web search. This includes imagery illustrating the feature types.
To submit a name proposal, download and return a name proposal submission form
Return forms to
International Hydrographic Organization (IHO)
Principality of Monaco
Intergovernmental Oceanographic Commission
SCUFN meets on a yearly basis. Access reports from past meetings (from the SCUFN pages at the International Hydrographic Organization's web site).
- 29th SCUFN Meeting, Boulder, Colorado, USA, 19-23 September 2016
- 28th SCUFN Meeting, Niteroi, Brazil, 12 - 16 October 2015
- 27th SCUFN Meeting, Monaco, 16 - 20 June 2014
- 26th SCUFN Meeting, Tokyo, Japan, 23-27 September 2013
- 25th SCUFN Meeting, Wellington, New Zealand, 23-27 October 2012
- 24th SCUFN Meeting, Beijing, China, 12-16 September 2011
- 23rd SCUFN Meeting, Lima, Peru, 11-14 September 2010
- 22nd SCUFN Meeting, Brest, France, 22-26 September 2009
- 21st SCUFN Meeting, Jeju Island, Republic of Korea, 19-22 May 2008
- 20th SCUFN Meeting, Monaco, 9-13 July 2007
- 19th SCUFN Meeting, Bremerhaven, Germany, 21-23 June 2006
- 18th SCUFN Meeting, Monaco, 3-6 October 2005
- 17th SCUFN Meeting, St. Petersburg, Russian Federation, 8-11 June 2004
- 16th SCUFN Meeting, Monaco, 10-12 April 2003
- 15th SCUFN Meeting, Monaco, 7-10 October 2002
- 14th SCUFN Meeting, Tokyo, Japan 17-20 April 2001, addendum to the report
- 13th SCUFN Meeting, Dartmouth, NS, Canada, June 1999
- 12th SCUFN Meeting, Taunton, UK, June 1997
- 11th SCUFN Meeting, Monaco, May 1995
- 10th SCUFN Meeting, La Jolla, CA, USA, May 1993
- 9th SCUFN Meeting, Leningrad, (now, St Petersburg), Soviet Union, (now, Russian Federation), June 1991
- 8th SCUFN Meeting, Monaco, May 1989
- 7th SCUFN Meeting, Monaco, April 1987
- 6th SCUFN Meeting, Monaco, April 1985
- 5th SCUFN Meeting, Ottawa, ON, Canada, April 1981
- 4th SCUFN Meeting, Monaco, October 1980
- 3rd SCUFN Meeting, Patricia Bay, BC, Canada, April 1978
- 2nd SCUFN Meeting, Ottawa, ON, Canada, February 1976
- 1st SCUFN Meeting, Dartmouth, NS, Canada, March 1975