Hmsm Grampus Wreck

Field Value
Wreck Category non-dangerous wreck
Hmsm grampus Wreck Location
Marine Coordinates (DMM) 		55 56.928 N,5 23.772 W
Latitude, Longitude
Decimal Degrees
  • Latitude: 55.948800
  • Longitude: -5.396200
Wreck Depth 110 m
Water Depth 130 m
Water Level Effect always under water/submerged
Vertical Datum Approximate Lowest Astronomical Tide
Name HMSM GRAMPUS
Type submarine
Flag GB
Length 73.5 m
Width 8.2 m
Draught 5.5
Tonnage 1610
Tonnage Type displacement
Conspic Visual not visually conspicuous
Conspic Radar not radar conspicuous
Date Sunk Sep 18, 1980
Bottom Texture Mud
Original Detection Year 1980
Last Detection Year 2016
Original Source ship visit/hydrographic note report
Last Amended Date Oct 2, 2020

Surveying Details

H4800/80 17.10.80 VESSEL HAS FOUNDERED IN 555639N, 052330W & IS UNMARKED. (CLYDE PORT AUTHORITY, HN H/6/80, 13.10.80). 31.10.80 REPD AS WK OF SUBMARINE HMS GRAMPUS. POSITIONAL DETAILS WILL BE FORWARDED. (SOO, COMCLYDE, TELECON 31.10.80). NCA YET. H4800/80 25.11.80 HULK OF GRAMPUS LOCATED BY MV SEAFORTH CLANSMAN IN 555654N, 052336W. IT IS INTACT, LYING ROUGHLY N/S & LEVEL ON SEABED. IT IS INTENDED TO MARK IT WITH A SONAR TRANSPONDER WITH 3.5 YEAR LIFE. IT IS POSSIBLE THE HULK MAY BE RECOVERED AS DMS(N) SALVAGE EXERCISE IN ABOUT 3 YEARS TIME. (COMCLYDE, LTR DTD 3.11.80). INS AS USC 110MTRS. - NM 2656/80. H4800/80 13.11.87 POSN CHECKED USING ARTEMIS. LIES IN 555651.5N, 052336W [OGB]. (P D BOUCHARD, MV BALGOWNIE, HN 2.10.87). AMEND POSN. BR STD. SEP 2020/000234877 2.10.20 WK LOCATED IN 5556.928N, 0523.772W [WGD]. LEAST M/B DEPTH 125.624MTRS. NFS. (BRITISH GEOLOGICAL SURVEY 25.11.15-17.4.16). RETAIN PREVIOUS DEPTH IN REVISED POSN.

Circumstances of loss

WAS TO BE SCUTTLED FOR USE AS U/W TARGET, BUT SANK PREMATURELY.

General Comments

INTACT & UPRIGHT

WRECK MAP LOADING ... 55 56.928 N,5 23.772 W
Hmsm Grampus on Wreck Map Hmsm Grampus Wreck on Google Map

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FAQ

Where is the HMSM GRAMPUS wreck located?

The HMSM GRAMPUS wreck is located at coordinates 55 56.928 N,5 23.772 W.

How deep is the HMSM GRAMPUS and where exactly is it located?

The HMSM GRAMPUS lies at a depth of about 110 meters and is located at coordinates 55 56.928 N,5 23.772 W.

How deep is the seabed around the HMSM GRAMPUS?

The seabed around the HMSM GRAMPUS lies at approximately 130 meters deep.

When did the HMSM GRAMPUS sink?

The HMSM GRAMPUS sank on Sep 18, 1980.

When was the wreck of the HMSM GRAMPUS discovered?

The wreck of the HMSM GRAMPUS was discovered in 1980.

What country did the HMSM GRAMPUS belong to?

The HMSM GRAMPUS belonged to GB.

What was the tonnage of the HMSM GRAMPUS?

The HMSM GRAMPUS had a tonnage of 1610 tons.

What type of wreck is the HMSM GRAMPUS?

The HMSM GRAMPUS is classified as a submarine.

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