Hmsm Poseidon Wreck
| Field | Value |
|---|---|
| Wreck Category | non-dangerous wreck |
|
Hmsm poseidon Wreck Location Marine Coordinates (DMM) |
37 50.25 N,122 14.25 E |
| Latitude, Longitude Decimal Degrees |
|
| Water Depth | 32 m |
| Water Level Effect | always under water/submerged |
| Vertical Datum | Approximate Lowest Astronomical Tide |
| Name | HMSM POSEIDON |
| Type | submarine |
| Flag | GB |
| Length | 79.2 m |
| Width | 9.1 m |
| Tonnage | 1475 |
| Tonnage Type | displacement |
| Conspic Visual | not visually conspicuous |
| Conspic Radar | not radar conspicuous |
| Date Sunk | Jun 9, 1931 |
| Bottom Texture | Mud |
| Original Detection Year | 1931 |
| Original Source | naval vessel |
| Surveying Details | H4946/31 11.7.31 H4946/31 11.7.31 SUNK IN 375015N, 1221415E, FIXED BY HSA & GYRO, AND CHECKED BY STAR SIGHT. LEAST DEPTH OVER WK 77FT, TOP OF PERISCOPE, IN GEN DEPTH 117FT, AT LW 11.6.31. NOT DANGEROUS TO NAVIGATION. (HMS MEDWAY, HN 22.6.31). H5701/31 H5701/31 NOT TO BE SHOWN ON BRITISH CHARTS. H7383/33 13.12.33 H7383/33 13.12.33 INS NDW 'POSEIDON' ON NC F 011 ONLY. (HYDROGRAPHER'S DECISION). |
| Last Amended Date | Dec 18, 2009 |
Circumstances of loss
SANK FOLLOWING A COLLISION WITH CHINESE SS YUTA OFF WEI HAI WEI. (BENEATH THE WAVES).
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