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Notable events involving Imersay include:

2 Jul 1945

Operation Collie.

The object of this operation was; sweeping mines off Car Nicobar and to bombardment and and conduct air strikes directed against appropriate targets.

Two forces were deployed;
Force 61, made up of the light cruiser HMS Nigeria (Capt. H.A. King, DSO, RN, flying the flag of Rear-Admiral W.R. Patterson, CB, CVO, RN), escort carriers HMS Ameer (Cdr. P.D.H.R. Pelly, DSO, RN), HMS Emperor (Capt. C. Madden, RN), HMS Eskimo (Lt. Cdr. E.N. Sinclair, DSC, RN) HMS Roebuck (Cdr. C.D. Bonham-Carter, RN) and HMS Vigilant (Lt.Cdr. L.W.L. Argles, DSC, RN).

Force 62: made up of the minesweepers HMS Melita (T/A/Lt.Cdr. G.R. May, RNR, with Cdr. D.L. Johnston, RN, Senior Officer Sixth Minesweeping Flotilla on board), HMS Gozo (Lt.Cdr. T.T. Euman, RN), HMS Lennox (T/A/Lt.Cdr. C.H. Walton, RNR), HMS Lightfoot (T/A/Lt.Cdr. A.S. Drysdale, RNVR), HMS Pelorus (Lt.Cdr. F.J. Bourgat, RN), HMS Persian (Lt.Cdr. J.L. Woollcombe, RN), HMS Postillion (A/Lt.Cdr. W.E. Halbert, DSC, RNR), and the trawlers HMS Imersay (T/A/Lt.Cdr. J.H.A. Winfield, RNR) and HMS Lingay (T/Lt. P.W. Jequier, RNVR) as danlayers.

In the afternoon of 2 July both forces sailed from Trincomalee to proceed direct to Car Nicobar. The destroyers and minesweepers fuelled from the carriers on passage and as necessary during the operation.

The minesweepers operated off Car Nicobar daily from the 5th to 10th July, inclusive. A total of 167 moored mines were swept, all to the eastward of the island.

To cover the activities of the minesweepers, Nigeria and the destroyers bombarded gun positions and targets of opportunity on the island, while Hellcats from the escort carriers carried out a series of strikes, during which radar stations were put out of action and all craft seen in the area rendered unseaworthy.

The only enemy reaction was accurate Anti-Aircraft fire. Four of our aircraft were shot down, but all pilots were rescued inshore, one by a Walrus aircraft flown off from HMS Emperor and the remainder by the destroyers who drew ineffective machine gun fire from shore.

Precautionary measures against a landing, these including the erection of stakes on airfield runways, were observed to be taken by the Japanese.

On 7th July, Nancowry was subjected to bombardments and air strikes by Force 61, operating in heavy rain squalls. Fires and explosions were observed in the area of Naval Point and two coasters were left on fire. Two of our Hellcats were shot down by Anti-Aircraft fire, the pilot of one being rescued.

At first light on 11th July, twenty four Hellcats attacked Kotaraja and Lhonga Airfields in northwest Sumatra. No aircraft were observed on either airfield, nor at Sabang, but runways and buildings were bombed and strafed. After being hit by Anti-Aircraft fire, one Hellcat force landed in the sea, the pilot being picked up by a destroyer. One Japanese aircraft which approached was shot down by fighters.

Force 61 arrived back at Trincomalee on 13 July 1945, Force 62 on the 14th. (1)

17 Aug 1945

Operations Jurist and Beecham.

In the morning a big portion of the Eastern Fleet departed Trincomalee for ' Operation Jurist ' which was were the intended landings at Penang and ' Operation Beecham '. were intended landings at Sabang. Borth operations were part of the planned, larger, ' Operation Zipper ' which was the occupation of Malaya including Singapore. (Note, some of the Forces listed below had departed Ceylon earlier then 17 August).

The Fleet was organised into six Forces;
Force 11 was made up of the battleship HMS Nelson (Capt. C. Caslon, CBE, RN, flying the flag of Vice Admiral H.C.T. Walker, CB, RN), light cruiser HMS Nigeria (Capt. H.A. King, DSO, RN), HMS Ceylon (Capt. K.L. Harkness, DSC, RN), escort carriers HMS Attacker (Capt. G.F. Renwick, RN), HMS Hunter (Capt. A.D. Torlesse, RN), HMS Stalker (Capt. L.C. Sinker, DSC, RN), HMS Shah (Capt. W.J. Yendell, RN), destroyers HMS Tartar (Capt. B. Jones, DSO and Bar, DSC, RN), HMS Petard (Lt.Cdr. R.L. Caple, DSC, RN) and HMS Volage (Cdr. R.T. Paul, CBE, RN) and the landing ships HMS Princess Beatrix (A/Cdr. J. Stretch, RD, RNR) and HMS Queen Emma (A/Cdr. T.L. Alkin, RN).

Force 12 was made up of the destroyers HMS Verulam (Lt.Cdr. D.H.R. Bromley, DSC, RN), HMS Vigilant (Lt.Cdr. L.W.L. Argles, DSC, RN) and 8 BYMS type minesweepers from the 166th Minesweeping Flotilla; HMS BYMS 2060 (T/Lt. R. Conde, RNVR), HMS BYMS 2162 (A/Skr.Lt. W. Sutherland, RNR), HMS BYMS 2168 (T/Lt. R.O. Tyrer, RNVR), HMS BYMS 2181 (T/A/Lt.Cdr. H.C. Butcher, RNVR), HMS BYMS 2203 (T/Lt. D.A. Turner, RNVR), HMS BYMS 2204 (T/Lt. R.A. Latrielle, RNVR), HMS BYMS 2232 (T/Lt. J. Mason, DSC, RNVR) and HMS BYMS 2236 (T/A/Lt.Cdr. W.C. Cooper, RNVR).

Force 13 was made up of the destroyer HMS Penn (Lt.Cdr. A.H. Diack, DSC, RN) and the tank landing ship HMS LST 383 (A/Lt.Cdr. H.B. Cadogan, RNR). The LST was loaded with motor transport.

Force 14 was made up of the escort destroyer HMS Calpe (A/Lt.Cdr. N.F.R. Gill, RNR) and the chartered tanker (RFA) Empire Salvage (British (tanker) 10746 GRT, built 1940)

Force 68 was made up of the heavy cruiser HMS London (Capt. S.L. Bateson, RN, flying the Broad Pendant of Commodore A.L. Poland, CB, DSO and Bar, DSC, RN) and the destroyers HMS Raider (Lt.Cdr. J.C. Cartwright, DSC, RN) and HMS Rocket (Lt.Cdr. H.B. Acworth, OBE, RN).

Force 157 was made up of the sloop HMIS Godavari (A/Cdr. H.M.S. Choudry, RIN), repair ship HMS Mull of Galloway (cdr. E.C. Hicks, RD, RNR), depot ship HMIS Barracuda (T/A/Cdr. L.G. Bingham, RINR), chartered gasoline tanker Cromwell (British, 1124 GRT, built 1943), 26 motor launches (ML's) of the 34th Flotilla; ML 194 (T/A/Lt.Cdr. L.F.W. Morley, RNVR), ML 187 (T/Lt. H.L. Langley, RNVR), ML 189 (T/Lt. W.J. Court, RNVR), ML 193 (T/Lt. J.T.C. Hastings, RNVR), ML 214 (T/Lt. B.H. Taylor, RNVR), ML 230 (T/Lt. J.K. Cook, RNVR), ML 245 (T/Lt. J Winthorpe-Young, RNVR), ML 907 (T/Lt. H W Perring, RNVR), ML 923 (T/Lt. S.E. Fowler, RNVR), 38th Flotilla; ML 851 (?), ML 850 (?), ML 897 (?), ML 898 (?), ML 899 (?), ML 900 (?), ML 4001 (?), ML 4002 (?), 56th Flotilla; ML 412 (T/Lt. J. Kent, RNVR, with T/A/Lt.Cdr. A.J. Howard, RINVR on board), ML 390 (T/S.Lt. J.H. Birtwhistle, RINVR), ML 413 (T/Lt. L.C.A. Green, RINVR [???]), ML 416 (T/Lt. A.J. Adam, RINVR), ML 417 (T/Lt. R.H. Kilbey, RINVR), ML 419 (T/Lt. L.C.A. Green, RINVR [???]), ML 843 (?), ML 844 (?), ML 872 (?) and 9 harbour defence motor launches (HDML's) from the 110th Flotilla; HMDL 1105 (T/Lt. H.J. Stanley, KRNVR), HDML 1080 (T/S.Lt. C. Turnbull, RNVR), HDML 1082 (T.S.Lt. R.S. Franck, SANF(V)), HDML 1086 (T/S.Lt. R.A.J. Webb, RNVR), HDML 1098 (), HDML 1106 (Lt. F.H. Barnes, KRNVR), HDML 1107 (T/S.Lt. F.J. Marks, RNVR), HDML 1108 (T/S.Lt. K.S. Ingram, RNVR) and HDML 1150 (T/Lt. R.R. Harvey, SANF(V)).

It was while these forces were on passage eastward that delays in negotiations with the Japanese, and in the arrival of the Japanese Emperor's orders to case hostilities in South East Asia became apparent. The day set for the landings had, therefore, to be postponed and on 20th August all forces concentrated at Trinkat Champlong on the north east coast of Great Nicobar Island. This bay provided shelter from wind and swell, and ML's, HDML'S and the BYMS minesweepers were able to refuel at the anchorage while larger units remained at sea in the immediate vicinity.

By this time it had also become apparent that no landings in this theatre would be permitted by the Allied High Command until the final instrument of surrender had been signed at Tokyo. According, all plans had to be adjusted.

Any operations to the southward of the One Fathom Bank in the Malacca Straits were dependent on establishing a safe channel through the minefield in the area, so all available fleet minesweepers were sailed from Ceylon on 15 August to proceed eastward. These consisted of 4 fleet minesweepers and 2 danlayers of the 6th M/S Flotilla; HMS Friendship (Cdr. D.L. Johnston, RN), HMS Lennox (T/A/Lt.Cdr. C.H. Walton, RNR), HMS Lightfoot (T/A/Lt.Cdr. A.S. Drysdale, RNVR), HMS Persian (Lt.Cdr. J.L. Woollcombe, RN), HMS Imersay (T/A/Lt.Cdr. J.H.A. Winfield, RNR) and HMS Lingay (T/Lt. P.W. Jequier, RNVR) as well as 7 fleet minesweepers of the 37th M/S Flotilla; – HMIS Orissa (T/Lt. C.S. Ahmad, RINR, with A/Cdr. G. Bailey, RIN on board), HMIS Rajputana (A/Lt.Cdr. A. Chakraverti, RIN), HMIS Kathiawar (T/Lt. R.J. Ward, RINR), HMIS Oudh (T/Lt. K.Y. Eccles, RINVR), HMIS Khyber (T/Lt. W.D.F. Clayton, RINR), HMIS Baluchistan (T/Lt. N.N. Pettitt, RINR) and HMIS Kumaon (T/Lt. U.J.S. Chopra, RINR).

On 17th August, the fleet minesweepers HMS Pelorus (Lt.Cdr. F.J. Bourgat, RN, with A/Capt.(Retd.) R.H.V. Sivewright, DSC, RN) and HMS Gozo (Lt.Cdr. T.T. Euman, RN) departed Colombo to overtake the 6th M/S Flotilla. They were joined by the fleet minesweeper HMIS Bengal (T/A/Lt.Cdr. W.L. Scurr, RINVR) and the RFA tanker Cherryleaf (5896 GRT, built 1917) from Trincomalee. HMS Gozo however returned to Trincomalee on 23 August with condenser trouble.

The above fleet minesweepers and attendant oiler were subsequently formed into Force 155.

In view of the delays already referred to above, the fleet minesweepers were ordered to proceed to the lee of Simalur Island, the most northerly of the chain of islands off the west coast of Sumatra, where they anchored in Lugu Sibabu PM on 22 August.

On 25 August the RFA tanker Orangeleaf (5927 GRT, built 1917) departed Colombo to join Force 155. On the 26th the fleet minesweepers HMS Melita (T/A/Lt.Cdr. G.R. May, RNR), HMIS Rohilkhand (?) and HMIS Carnatic (T/Lt. A.E.B. Park, RINR) also sailed from Colombo to augment Force 155 and were joined by HMS Gozo from Trincomalee which had made repairs there but now HMIS Carnatic had to return with defects.

A meeting of was held at Rangoon on 26 August 1945, in which representatives of the Supreme Allied commander, South East Asia and plenipotentiaries from the Japanese Southern Area Command.

As a result of this meeting all ships left their concentration points at Great Nicobar Island and Simalur on 27th August.

Vice Admiral Walker, CB with Force 11 and Commodore Poland with Force 68 anchored off Penang and Sabang respectively AM on 28 August. The remainder of the forces arrived off the Malayan shore on 29th August. Bad weather forced the small ships to anchor in the lee of Langkawi Island.

Also on 27 August 1945 more fleet minesweepers had departed Ceylon to join Force 155. These were HMS Recruit (A/Cdr. A.E. Doran, DSC, RN), HMS Chameleon (T/A/Lt.Cdr. D.P. Richardson, RNVR), HMS Pincher (T/A/Lt.Cdr. C.B. Blake, RNVR), HMS Plucky (T/A/Lt.Cdr. G. Wallis, RNVR), HMS Rifleman (Lt. C.L. Carroll, DSC, RNR), HMIS Punjab(Lt. A.V. Baker, RIN) and HMS Deccan (?) and HMIS Bihar (T/Lt. J. Vendrell, RINR).

Senior Japanese officers at Penang came on board HMS Nelson on 28 August and signed an agreement that no attack would be made on the Fleet. Further meetings were held on the 29th, 30th and 31st. The Japanese proved cooperative and provided the necessary information relative to their minefields, including those at Singapore and other areas.

All arrangements were completed for the occupation of Penang and preparations made to land as soon as the instrument of surrender was signed at Tokyo. On 30th August, BYMS minesweepers began to sweep the northern approach channel to the harbour.

At Sabang, guarantees and information similar to that obtained at Penang were supplied by the Japanese during meetings on board HMS London. Arrangements were also made for all Japanese forces and Sumatran coolies to evacuate Pulu-Wei and proceeded to Kota Raja on the Sumatran mainland.

On 27 August, the Commander in Chief, East Indies, Admiral Sir A.J. Power, KCB, CVO, departed Colombo in HMS Cleopatra (Capt. B.I. Robertshaw, CBE, RN) arriving at Sabang on 29th August, and subsequently proceeding to Penang.