Thyra Wreck
| Field | Value |
|---|---|
| Wreck Category | dangerous wreck |
|
Thyra Wreck Location Marine Coordinates (DMM) |
51 57.009 N,1 38.567 E |
| Latitude, Longitude Decimal Degrees |
|
| Wreck Depth | 15.4 m |
| Water Depth | 25 m |
| Water Level Effect | always under water/submerged |
| Vertical Datum | Approximate Lowest Astronomical Tide |
| Name | THYRA |
| Type | steam ship |
| Flag | SE |
| Length | 82 m |
| Width | 12.8 m |
| Draught | 5.5 |
| Sonar Length | 84 |
| Sonar Width | 20 |
| Shadow Height | 9.6 |
| Orientation | 103 |
| Tonnage | 1796 |
| Tonnage Type | gross |
| Cargo | timber |
| Conspic Visual | not visually conspicuous |
| Conspic Radar | not radar conspicuous |
| Date Sunk | Feb 28, 1942 |
| Bottom Texture | 1,4,6 |
| Scour Dimensions | 800.0,004.0,211.0 |
| Original Detection Year | 1942 |
| Last Detection Year | 2016 |
| Original Source | national HO/authority notice to mariners |
| Surveying Details | H0984/42 16.5.42 WK, NOT DANGEROUS TO NAVIGATION, IN 515700N, 013845E. INS AS NDW. - NM 1016/42. 8.5.68 AMEND TO DW. LC 1610, 2052. H3161/69 26.10.71 INS DW ON 1504, (MISS SCALE). (BP TANKERS, 14.10.71). - NM 1732/71. H3821/72 29.8.72 AMEND TO USC 8FMS. - NM 1579/72. 21.9.72 AMEND TO USC 15.0MTRS. NC 2052. H3821/72 13.7.73 LEAST DEPTH OVER WK 7FMS 3FT. (WESTMINSTER GRAVELS, 1.7.73). - NM 1434/73. H4139/76 11.1.77 LOCATED 7.8.76 IN 515700N, 013839E [OGB] USING HIFIX/6 [2 LOP]. SWEPT CLEAR AT 13.9, FOUL AT 14.2MTRS. LEAST E/S DEPTH 15.6MTRS IN GEN DEPTH 25MTRS. SCOUR DEPTH 26MTRS. LARGE WK - 90 X 60MTRS, APPROX. LYING NE/SW. SIGNS OF CONSIDERABLE BREAK-UP AT NORTHERN END. (HMS BEAGLE, HI 31/76). BR STD. H3186/73 21.2.79 EXAM'D 9.8.78 IN 515659N, 013840E [OGB] USING HIFIX/6 [2 LOP]. LEAST E/S DEPTH 15.4 IN GEN DEPTH 24-25MTRS. SONAR HT 8.6MTRS, LENGTH OVER 200FT. LIES WNW/ESE GIVING GOOD SONAR RESPONSE FROM ALL DIRECTIONS. DEEP HOLE TO N OF WK, WHICH WHILE DETACHED, MAY BE SCOUR WITH DEPTH 28MTRS. (HMS ENTERPRISE, HI 60C/78). NCA. H1940/80 1.4.82 EXAM'D 12.11.81 IN 515659N, 013843 [OGB] USING HIFIX/6 [2 LOP]. LEAST E/S DEPTH 15.9 IN GEN DEPTH 25MTRS. SCOUR 2.5MTRS DEEP. LYING 120/300 DEGS. NOT FULLY SURVEYED. (SOISS, HI 9, WK 15). NCA. H1940/80 23.9.87 MR JOHN PERKINS, INTENDING TO DIVE ON THIS WK 22.8.87 REPORTED STRONG UPWELLING OVER AN AREA OF APPROX 50FT DIAMETER IN VICINITY, WITH SAND, SHINGLE & SHELL BEING DISTURBED. THE PHENOMENON CONTINUED FOR AN HOUR. OBTAINED E/S DEPTH OVER WK OF 12MTRS. (THAMES MRSC, TELEX 24.8.87). NCA. HH090/667/01 20.12.95 EXAM'D 23.7.95 IN 515700.27N, 013835.02E [WGD] USING DGPS. SWEPT CLEAR 15.2, FOUL 15.4MTRS. LEAST E/S DEPTH 15.8 IN GEN DEPTH 25.0MTRS. SCOUR DEPTH 2.6MTRS. DCS3 HT 8.1MTRS. LENGTH 80MTRS, WIDTH 18MTRS. LIES 095/275 DEGS. STRONG MAGNETIC ANOMALY. LYING ON ITS SIDE. DIVER'S REPORT STATES THAT THE WK IS HEAVILY NETTED. (OCEONICS, HI 667). NOT FULLY SWEPT, RETAIN AS SW 13.9MTRS IN REVISED POSN. BR STD. SEP 2015/000083463 18.7.16 EXAM'D 22.2.16 IN 5157.009N, 0138.567E [WGD]. LEAST M/B DEPTH 15.4MTRS IN GEN DEPTH 25MTRS. LENGTH 84MTRS, WIDTH 20MTRS, HT 9.6MTRS, ORIENTATION 103/283. SCOUR LENGTH 800MTRS, 4MTRS DEEP TOWARDS 211DEGS. STRONG MAGNETIC ANOMALY. WK LYING ON ITS PORT SIDE SIDE. POSITIONED PERPENDICULAR TO THE TIDAL CURRENT FLOW. (MMT, HI 1474). AMEND DW 15.4MTRS IN REVISED POSN. |
| Last Amended Date | Jul 18, 2016 |
Circumstances of loss
BUILT IN 1925 BY FREDRIKSTAD MEK VAERKS, FREDRIKSTAD. OWNED AT TIME OF LOSS BY A/B TRANMARIN. TWO BOILERS, TRIPLE EXPANSION ENGINE OF 187HP, SINGLE SHAFT. PASSAGE HARTLEPOOL FOR LONDON. CARGO 752 STANDARDS OF TIMBER. STRUCK A MINE AND WAS TAKEN IN TOW. LATER SANK.
WRECK MAP LOADING ...
51 57.009 N,1 38.567 E
Thyra on Wreck Map
Thyra Wreck on Google Map
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General Comments
Wk partially buried