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Noteable events involving Tudor include:

16 May 1944
After a period of trials and excersises HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Holy Loch bound for Gibraltar. She is to proceed to Trincomalee to join the Eastern Fleet.

For the daily positions of HMS Tudor during this passage see the map below.

HMS Tudor passage U.K. - Trincomaleeclick here for bigger map

29 May 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) arrives at Gibraltar.

6 Jun 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Gibraltar bound for Malta.

11 Jun 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) arrives at Malta.

19 Jun 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Malta bound for Port Said.

24 Jun 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) arrives at Port Said.

26 Jun 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) transits the Suez Canal.

27 Jun 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Suez bound for Aden.

2 Jul 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) arrives at Aden.

6 Jul 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Aden bound for Trincomalee.

16 Jul 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) arrives at Trincomalee.

6 Aug 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Trincomalee for her 1st war patrol. She is to patrol off the Northern entrance to the Malacca Straits and to perform a special mission.

For the daily and attack positions of HMS Tudor during this patrol see the map below.

HMS Tudor 1st war patrolclick here for bigger map

17 Aug 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) lands a party to make a beach reconnaissanse at Bireuen on the North coast of Sumatra. The party is recovered after about 3 hours.

18 Aug 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) again lands a party to make a beach reconnaissanse at Bireuen on the North coast of Sumatra. The party is recovered after about 3,5 hours.

22 Aug 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) sinks a junk with gunfire north of Sumatra in position 05º19'N, 96º30'E.

(All times are zone -6,5)
1246 hours - Surfaced to sink a junk, that was 3/4 laden, about 120 feet long and estimated to be 100 tons.

1253 hours - Dived. (see map)

23 Aug 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) again lands a party to make a beach reconnaissanse at Bireuen on the North coast of Sumatra. The party is recovered early the next day after about almost 4 hours.

30 Aug 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) ends her 1st war patrol at Trincomalee.

19 Sep 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Trincomalee for her 2nd war patrol. She is to patrol along the West coast of Siam and to lay a minefield.

For the daily positions of HMS Tudor during this patrol see the map below.

HMS Tudor 2nd war patrolclick here for bigger map

24 Sep 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) lays 10 mines off the west coast of Siam.

(All miles are zone -6,5)
2002 hours - Laid 6 mines staggered either side of a line 079 degrees from position 07º23'3"N, 99º04'2"E up to the 5,5 fathom line. Distance between the mines was 600 feet. The depth of the water was 5,5 to 7 fathoms.

2050 hours - completed the first lay of 6 mines.

2310 hours - Commenced the second lay of 4 mines from position 07º28'N, 99º03'9"E, in a 275 degree direction staggered at 600 feet apart, in a depth of 7 fathoms.

2318 hours - Lay completed.

14 Oct 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) ends her 2nd war patrol at Trincomalee.

2 Nov 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Trincomalee for her 3rd war patrol. She is to patrol along the West coast of Sumatra.

For the daily positions of HMS Tudor during this patrol see the map below.

HMS Tudor 3rd war patrolclick here for bigger map

16 Nov 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) destroys a Japanese coaster with gunfire of the west coast of Sumatra in position 02º18'S, 100º52'E.

(All times are zone -6,5)
0815 hours - Sighted a vessel rounding the bouy off Indrapura Point. Closed to the Northward.

0830 hours - Identified the target as a 150 ton motor ship with the engines and passenger accomodation aft. She was Southbound at 6 knots coast crawling keeping a steady one mile of the coast.

0925 hours - Surfaced in position 02º15'S, 100º48'E on the starboard quarter of the target, range 2000 yards and opened fire with the 4"gun and the Oerlikon. The vessel was soon hit aft in the engine room and stopped with a list to starboard. 3 other hits were observed in the hull after 12 rounds.

0929 hours - After the 12th round a Rufe floatplane was seen coming down the coast from the North. It was heard before it was seen, due to the low clouds.

0930 hours - Dived to 48 feet. Three bombs were dropped by the aircraft. The first one was rather close and did some damage to several gauges.

1130 hours - Sighted the target aground in position 02º18'S, 100º52'E. The stern was still in the water so Lt. Porter decided to fire a torpedo. Closed to the 10 fathom line.

1209 hours - Fired one torpedo from 2000 yards. After an in initial swerve 15 degrees of course the torpedo exploded prematurely after running for 400 yards.

1345 hours - Sighted a patrolling aricraft so surfacing to finish of the ship with gunfire was now out of the question.

1500 hours - After the aircraft had left closed the target again.

1737 hours - Surfaced in position 02º18'5"S, 100º51'E. Opened fire from 2000 yards at the beached motor ship with the 4" gun and the Oerlikon. 8 hits out of 20 rounds of 4" were scored on the vessel. It was now well on fire. This is a total loss to the enemy.

1745 hours -Ceased fire and dived. Retired to the seaward. (see map)

26 Nov 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) ends her 3rd war patrol at Trincomalee.

15 Dec 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Trincomalee for her 4th war patrol. She is to patrol along the coast of Burma.

For the daily positions of HMS Tudor during this patrol see the map below.

HMS Tudor 4th war patrolclick here for bigger map

22 Dec 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) sinks a sailing vessel with gunfire of the west coast of Burma in position 13º42'N, 98º05'E.

(All times are zone -6,5)
1508 hours - Sighted a two mast schooner that was Northbound. Closed it while dived to attack it with gunfire. The vessel was tacking the coast and just before Tudor was abnout to surface it anchored off the coast and lowered it sails. She was of similar built to a Chinese timber tongkang.

1608 hours - Surfaced in position 13º42'N, 98º05'E and opened fire with the 4"gun, range 1300 yards. After hitting with the 3rd round paused to allow the crew to abandon ship, which they did not do. As Lt. Porter did not want to wait in this exposed position (shallow water) the shelling now continued until the vessel blew up with a very satisfactory explosion. The vessel was of about 70 tons and was probably carrying cased petrol judging by the flame and the smoke. 11 Rounds in all were fired for 5 hits.

1613 hours - Dived and retired from the scene. (see map)

24 Dec 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) sinks two sailing vessels with gunfire of the west coast of Burma in position 13º44'N, 98º04'E.

(All times are zone -6,5)
0800 hours - Sighted a 70 tons schooner rigged tongkang Northbound and a smalled two masted junk of 25 tons deep laden and also Northbound. Closed the schooner while dived for gun action.

0849 hours - Surfaced in position 13º43'N, 98º04'E and sank the schooner with 5 rounds of 4" - all were hits. There was a pause in the shooting to allow the crew to abandon ship which they did not do. The shooting continued and the vessel soon exploded, she was most likely carrying ammunition.

Closed the junk which had now anchored of the shore. The crew was now on the beach having left their ship in a sampam. 18 rounds of 4" were fired before this ship also exploded in position 13º45'N, 98º04'E.

0901 hours - Dived. (see map)

25 Dec 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) sinks two sailing vessels with gunfire of the west coast of Burma. One in position 13º14'N, 98º17'E and one in position 13º19N, 98º22'E.

(All times are zone -6,5)
0845 hours - Closed a 15 ton two masted junk that was Northbound and deep laden.

0854 hours - Surfaced in position 13º14'N, 98º17'E and fired a warning shot. The crew did not abandon ship. Continued to fire with the 4" gun and after three rounds the vessel sank by the head.

0900 hours - Dived and set course to the Eastward.

1055 hours - A schooner was sighted to the East. It was Northbound. Closed the schooner while dived.

1208 hours - Surfaced in position 13º19'N, 98º22'E and fired a warning shot. The crew took no action. Continued the firing and after 11 hits after 13 rounds the vessel sank.

1214 hours - Dived and retired to the West. (see map)

27 Dec 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) sinks a sailing vessel with gunfire of the west coast of Burma in position 14º01'N, 98º02'E .

(All times are zone -6,5)
1100 hours - Sighted a two-masted schooner, deep laden and Northbound.

1131 hours - Surfaced in position 14º01'N, 98º02'E and sank the vessel with 14 rounds of 4".

1140 hours - Dived and proced Southward. (see map)

29 Dec 1944
HMS Tudor (Lt. S.A. Porter, DSC, RN) sinks a Japanese junk with gunfire of the west coast of Burma in position 13º47'N, 98º04'E.

(All times are zone -6,5)
1430 hours - Sighted a large junk Northbound. closed dived to a range of 1500 yards.

1609 hours - Surfaced in position 13º47'N, 98º04'E. The vessel was of 100 tons, had three masts and was flying the Japanese flag. Nine rounds were fired, all were hits. The vessel sank in 2,5 minutes.

1615 hours - Dived and proceeded southward. (see map)

5 Jan 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) ends her 4th war patrol at Trincomalee.

30 Jan 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Trincomalee for Fremantle, Australia.

For the daily positions of HMS Tudor during this passage see the map below.

HMS Tudor passage Trincomalee - Fremantleclick here for bigger map

13 Feb 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) arrives at Fremantle.

7 Mar 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Fremantle for her 5th war patrol. She is to patrol in the Southern part of the South China Sea.

For the daily positions of HMS Tudor during this patrol see the map below.

HMS Tudor 5th war patrolclick here for bigger map

22 Mar 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) attacks a convoy of two small merchants with three escorts in position 02º26'5"N, 108º54'E. Four torpedoes were fired at the largest merchant but none hit. Tudor was hunted and depth charged after the attack but managed to escape.

(All times are zone -8)
1234 hours - In position 02º27'N, 108º52'E sighted puffs of smoke to the South-East. Closed at speed.

1256 hours - The enemy's course appears to be about 050 degrees, speed was about 5 knots. The vessels appeared to be heading towards Royalist Haven (Serasan Island).

1325 hours - Sighted masts and funnel of a ship. Range was about 6000 yards.

1327 hours - Sighted on modern escort ahead of the target using Asdic. The escort was about 400 tons with large sheer and concentrated superstructure, unlike any sihoulette in the books, obviously it was new constuction. The target was a 1400 ton merchant ship. Astern of the target was another escort with two raked masts and a low superstructure with a gun forward. Astern of this second escort was another merchant of about 1200 tons. Astern of this merchant was a trawler that was bringing up the rear.

1336 hours - In position 02º26'5"N, 108º54'E fired four torpedoes set at 6 feet. Went deep and turned South immediately after firing. No hits were obtained. The lesading escort gained contact on Tudor. It went right overhead but dropped nothing at that time dispite the firm contact. Shortly afterward 7 small depth charges were dropped but these were not too close. A further 8 depth charges were dropped but also none of these was too close. The escort then started an Asdic hunt. Tudor turned to the South-West to keep end on and gain deeper water.

1430 hours - The escort was joined by a second one. They were in contact but did not drop anything further. They just tried to keep Tudor down.

1500 hours - Heard no more of the escorts, HE and pinging had ceased.

1609 hours - After hearing nothing for over an hour returned to periscope depth. Tudor was detected right away as she came from under a density in the water. The escorts were obviously still there. Tudor returned to 110 feet and altered course to the Westward. The escorts passed overhead but did not drop anything.

1633 hours - Both escorts lost contact by now. No HE was heard.

1837 hours - Came to periscope depth and found nothing in sight.

1931 hours - Surfaced in position 02º20'N, 108º40'E. Set course for the channel south of Great Natuna Island hoping the enemy would go that way tomorrow. (see map)

23 Mar 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) again sights the convoy she unsuccesfully attacked the day before. An attack is set up but as the American submarine USS Boarfish, that is also on the scene, is detected by one of the escorts the convoy changes course. Tudor's attack is spoiled by this change of course.

(All times are zone -8)
1440 hours - In position 03º27'N, 108º09'E sighted a vessel to the Southward. Commenced attack.

1447 hours - Identified the target as an American submarine that was going Northbound at 17 knots and was zigging. Ceased attack.

1454 hours - The American submarine was no longer in sight, it must have dived.

1520 hours - In position 03º26'5"N, 108º09'5"E sighted smoke to the South-East. Closed.

1541 hours - The smoke was identified as coming from a convoy. It was the same convoy that was attacked the day before. Commenced attack on the second merchant ship (Tudor was not in a correct position to be able to attack the first, slightly bigger, merchant ship).

1547 hours - Went deep and closed at speed.

1554 hours - The leading escort was pinging but not in contact.

1604 hours - The convoy zigged towards Tudor.

1605 hours - Tudor was now in position 03º26'N, 108º11'E when it was seen that the leading escort hoisted a flag, turned towards and increased speed. She was in contact but not with Tudor so it must have been the American submarine. The escort dropped 13 depth charges. Meanwhile the convoy had changed course spoiling Tudor's attack. The game of cat and mouse between the escort and both submarines continued for the rest of the day.

15 Apr 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) ends her 5th war patrol at Fremantle.

7 May 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Fremantle for her 6th war patrol. She is to patrol in the Eastern part of the Java Sea.

For the daily positions of HMS Tudor during this patrol see the map below.

HMS Tudor 5th war patrol weergeven op een grotere kaart

10 Jun 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) ends her 6th war patrol (that was blank) at Fremantle.

29 Jun 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Fremantle for her 7th war patrol. She is to patrol in the Java Sea. This is her last patrol before she is to be sent back to the U.K. for refit.

For the daily positions of HMS Tudor during this patrol see the map below.

HMS Tudor 7th war patrolclick here for bigger map

9 Jul 1945
After repairs HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Fremantle to resume her 7th war patrol.

23 Jul 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) sinks a schooner with gunfire in the Java Sea in position 06º09'S, 108º13'E.

(All times are zone -9)
1445 hours - Sighted a schooner of about 150 tons Eastbound. The vessel was deep laden and there were oil drums on the upper deck. Closed submerged.

1530 hours - Surfaced in position 06º09'S, 108º13'E and fired warning shots. The crew eventually abandoned ship in a boat and the schooner was sunk with 4" gunfire.

1552 hours - Dived and resumed patrol going Northward. (see map)

28 Jul 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) sinks two Japanese sea trucks with gunfire in the Java Sea in position 06º48'S, 109º31'E.

(All times are zone -9)
1625 hours - Sighted two sea trucks of about 250 tons each. They were Westbound. No escort or air cover was visible. Closed the 10 fathom line submerged.

1637 hours - Surfaced in position 06º48'S, 109º31'E and opened fire on the leading sea truck. Scored hits on both and the both turned towards the beach and beached themselves. Both were abandoned by the crews. A total of 113 rounds of 4" were fired. Both vessels took many hits.

1707 hours - Turned to the seaward.

1719 hours - Dived in position 06º44'S, 19º34'E. (see map)

29 Jul 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) destroys a Japanese sea truck with gunfire in the Java Sea in position 06º50'S, 109º37'E.

(All times are zone -9)
1845 hours - Sighted a sea truck on the beach at Pekalongan.

1905 hours - Surfaced in position 06º48'S, 109º42'E and opened fire from 4500 yards with the 4" gun. Now a laden sea truck was sighted 4 nautical miles to the West and Eastbound.

1906 hours - Ceased fire and set of to the laden sea truck of about 250 tons. The sea truck saw the submarine and headed towards the beach.

1919 hours - Opened fire from 4000 yards. The sea truck beached itself in position 06º50'S, 109º37'E. Fired 70 rounds for 30 hits. The vessel blew up with a spectacular explosion.

1942 hours - Set course to seaward. (see map)

11 Aug 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) ends her 7th war patrol at Fremantle.

22 Aug 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Fremantle bound for Aden. She is to proceed to the U.K. where she is to refit.

11 Sep 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) makes a short call at Aden she departs for Suez the same day.

16 Sep 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) arrives at Suez.

17 Sep 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) transits the Suez Canal and arrives at Port Said.

22 Sep 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Port Said bound for Gibraltar.

28 Sep 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) arrives at Gibraltar.

30 Sep 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Gibraltar bound for Portsmouth.

5 Oct 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) arrives at Portsmouth.

23 Oct 1945
HMS Tudor (Lt. S.A. Porter, DSC, RN) departs Portsmouth for the Devonport Dockyard where she is to refit.