| Navy | The Royal Indian Navy |
| Type | Sloop |
| Class | [No specific class] |
| Pennant | J 81 |
| Built by | W. Simons & Co. Ltd. (Renfrew, Scotland) |
| Ordered | |
| Laid down | |
| Launched | 13 Mar 1925 |
| Commissioned | 1934 |
| End service | |
| History | Former Government Cable ship Patrick Stewart. Taken over by the Royal Indian Navy in 1932 and converted to a surving ship in 1934. Served as patrol sloop during the Second World War. Sold in 1951. Displacement: 1572 tons (1890 tons, full load) Dimensions: 226 (pp), 247 (oa) x 37.5 x 13.5 (16.25 full load) feet Machinery: 2 Boilers, 2 shafts, reciprocating engine, IHP 2400 = 12.5 knots Armament: 1 4.7" gun, 2 20mm (AA) (2x1), 2 .303" (AA) (2x1) Completment: 109 |
Commands listed for HMIS Investigator (J 81)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Lancelot Sanderson, RIN | 1 Oct 1935 | 29 Sep 1939 |
| 2 | Cdr. Henry Richmond Inigo-Jones, RIN | 29 Sep 1939 | Mar 1940 |
| 3 | Lt.Cdr. Hector Eric Felsor Paine, RIN | Mar 1940 | 8 Apr 1940 |
| 4 | Lt.Cdr. Martin Henry St.Leger Nott, OBE, RIN | 8 Apr 1940 | 16 Jul 1940 |
| 5 | Lt. William Joseph Graham Hughes, RIN | 16 Jul 1940 | 11 Jan 1941 |
| 6 | Cdr. Harold Charles Beauchamp, RIN | 11 Jan 1941 | 28 Dec 1941 |
| 7 | Lt. Maurice Gilbert Collins, RIN | 28 Dec 1941 | mid 1942 |
| 8 | R M Snelgrove, RINR | mid 1942 | 1 Dec 1942 |
| 9 | T/Lt. Roy Walker Emerson, RINR | 1 Dec 1942 | 15 May 1943 |
| 10 | W H Currie, RINVR | 15 May 1943 | 1 Dec 1944 |
| 11 | A/Lt.Cdr. Anthony Troughton Bond, RIN | 1 Dec 1944 | 25 Aug 1945 |
| 12 | T/A/Lt.Cdr. George Alfred Foster, RINR | 25 Aug 1945 | 22 Oct 1945 |
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