Hms Rhiannon (Possibly) Wreck

Field Value
Wreck Category dangerous wreck
Hms rhiannon (possibly) Wreck Location
Marine Coordinates (DMM) 		51 45.602 N,1 39.815 E
Latitude, Longitude
Decimal Degrees
  • Latitude: 51.760033
  • Longitude: 1.663583
Wreck Depth 24.06 m
Water Depth 25 m
Water Level Effect always under water/submerged
Vertical Datum Approximate Lowest Astronomical Tide
Name HMS RHIANNON (POSSIBLY)
Type yacht
Flag GB
Sonar Length 16.62
Sonar Width 6.61
Shadow Height 0.84
Orientation 140
Tonnage 137
Tonnage Type gross
Conspic Visual not visually conspicuous
Conspic Radar not radar conspicuous
Date Sunk Jul 20, 1915
Bottom Texture 1,4,6
Scour Dimensions 034.8,016.8,000.9,209
Original Detection Year 1970
Last Detection Year 2024
Original Source naval vessel
Surveying Details MINED OFF LONGSAND LT VESSEL CLOSE TO THE WK OF PEIK. (NAVAL STAFF MONOGRAPHS VOL 14). POSN 514722N, 013830E FOR FILING ONLY [SEE 69321]. H2132/70 6.2.70 WK EXAM'D 29.10.69 IN 514535N, 013956E [OGB] USING HIFIX [2 LOP]. SWEPT CLEAR AT 21.3, FOUL AT 21.7MTRS. LEAST E/S DEPTH 22.6 IN GEN DEPTH 25.5MTRS. SCOUR DEPTH 26.2MTRS. (HMS ENTERPRISE, HI 43/69). INS AS SW 11FMS. - NM 304/70. H4988/71 6.1.72 EXAM'D IN 514540N, 013954E [EUR] USING HIFIX [2 LOP]. LEAST E/S DEPTH 22 IN GEN DEPTH 24.5MTRS [LAT]. NO SCOUR. LENGTH ABOUT 75FT. LIES 120/300 DEG. (HMS FAWN). NCA. 23.1.73 AMEND TO SW 21MTRS. NC 1975. H2132/70 11.4.79 EXAM'D 26.10.78 IN 514535N, 013957E [OGB] USING HIFIX/6 [2 LOP]. LEAST E/S DEPTH 23.8 IN GEN DEPTH 25MTRS. SCOUR DEPTH 25.6MTRS. DCS3 HT 3MTRS, LENGTH 13MTRS. LIES 135/315DEG. (SOISS, HI 60D/78). RETAIN SWEPT DEPTH. HH090/481/01 27.11.90 EXAM'D 29.9.90 IN 514534N, 014005.7E [OGB] USING TRISPONDER [5 LOP]. LEAST E/S DEPTH 24.3 IN GEN DEPTH 25MTRS. NO SCOUR. NO SONAR SHADOW OBTAINED. LENGTH 20MTRS, BEAM 7MTRS. LIES 020/200 DEG. SMALL, BROKEN-UP AND MOSTLY BURIED. NO MAGNETIC ANOMALY NOTED. RETAIN CHARTED DEPTH. (NP 1016, HI 481). AMEND POSN. BR STD. HH090/698/01 2.9.96 EXAM'D 18.7.96 IN 514535.8N, 013949.1E [WGD] USING DGPS. LEAST E/S DEPTH 24.3 IN GEN DEPTH 24.6MTRS. SCOUR DEPTH 1.0MTR. NO DCS3 HT. LENGTH 30MTRS, WIDTH 5MTRS. LIES 035/215 DEGS. APPEARS TO BE INTACT. MAGNETOMETER NOT AVAILABLE. (NP 1016, HI 698). RETAIN SW 21MTRS IN REVISED POSN. BR STD. HH100/351/20 5.8.03 DIVED IN 5145.596N, 0139.806E [WGD]. THE WK OF A WOODEN SAILING VESSEL. UPRIGHT AND ALMOST COMPLETELY BURIED. RIBS OF HULL ONLY PROTRUDE 2 FEET FROM THE SEABED. VERY SILTY. (B HICKINBOTTOM). AMEND TO WK 24MTRS. BR STD. SEP 2015/000083463 14.7.16 EXAM'D 24.2.16 IN 5145.599N, 0139.821E [WGD]. LEAST M/B DEPTH 24.1MTRS IN GEN DEPTH 25MTRS. LENGTH 17MTRS, WIDTH 5MTRS, HT 0.9MTRS, ORIENTATION 140/320. SCOUR LENGTH 150MTRS, 1.0MTRS DEEP, TOWARDS 205DEGS. MODERATE MAGNETIC ANOMALY. WK APPEARS AS LOW STRUCTURE WITH FAINT OUTLINE OF VESSEL SHAPE ON THE SEABED. (MMT, HI 1474). AMEND DW 24MTRS IN REVISED POSN. RSDRA2024000221638 19.08.24 EXAM'D 11.4.2024; LOCATED IN 5145.602N, 0139.815E [WGD]. LEAST M/B DEPTH 24.06MTRS IN GEN DEPTH 25MTRS. LENGTH 16.62MTRS, WIDTH 6.61MTRS, HEIGHT 0.84MTRS, ORIENTATION 140/320 DEGS. INTACT & UPRIGHT, ALMOST COMPLETELY BURIED. (HI 1803, CLINTON MARINE SURVEY, H525-14433). AMEND DW 24MTRS IN REVISED POSN.
Last Amended Date Sep 19, 2024

Circumstances of loss

15.9.14 BUILT IN 1914 OF WOOD. ONE BOILER, TRIPLE EXPANSION ENGINE, SINGLE SHAFT. HIRED AS AN ARMED PATROL VESSEL FROM 15.9.14. MINED OFF LONGSAND. CREW OF 5 LOST. (SRN & SIBI).

General Comments

WOODEN HULL, INTACT & UPRIGHT, ALMOST COMPLETELY BURIED

WRECK MAP LOADING ... 51 45.602 N,1 39.815 E
Hms Rhiannon (Possibly) on Wreck Map Hms Rhiannon (Possibly) Wreck on Google Map

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FAQ

Where is the HMS RHIANNON (POSSIBLY) wreck located?

The HMS RHIANNON (POSSIBLY) wreck is located at coordinates 51 45.602 N,1 39.815 E.

How deep is the HMS RHIANNON (POSSIBLY) and where exactly is it located?

The HMS RHIANNON (POSSIBLY) lies at a depth of about 24.06 meters and is located at coordinates 51 45.602 N,1 39.815 E.

How deep is the seabed around the HMS RHIANNON (POSSIBLY)?

The seabed around the HMS RHIANNON (POSSIBLY) lies at approximately 25 meters deep.

When did the HMS RHIANNON (POSSIBLY) sink?

The HMS RHIANNON (POSSIBLY) sank on Jul 20, 1915.

When was the wreck of the HMS RHIANNON (POSSIBLY) discovered?

The wreck of the HMS RHIANNON (POSSIBLY) was discovered in 1970.

What country did the HMS RHIANNON (POSSIBLY) belong to?

The HMS RHIANNON (POSSIBLY) belonged to GB.

What was the tonnage of the HMS RHIANNON (POSSIBLY)?

The HMS RHIANNON (POSSIBLY) had a tonnage of 137 tons.

What type of wreck is the HMS RHIANNON (POSSIBLY)?

The HMS RHIANNON (POSSIBLY) is classified as a yacht.

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