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Notable events involving Dittany include:

4 Oct 1943
HMS Venturer (Lt. J.S. Launders, DSC, RN) shifted from Rothesay to Larne. She was escorted by HMS Dittany (T/Lt. S.W. Lock, RNVR). (1)

11 Feb 1944
HrMs O 10 (Lt.Cdr. A. van Altena, RNN(R)) participated in A/S exercises off Tobermory with HMS Dittany (T/Lt. S.W. Lock, RNVR) and HMS Gateshead (T/Lt. R.B. Hughes, RNVR). (2)

12 Feb 1944
HrMs O 10 (Lt.Cdr. A. van Altena, RNN(R)) participated in A/S exercises off Tobermory with HMS Dittany (T/Lt. S.W. Lock, RNVR) and HMS Gateshead (T/Lt. R.B. Hughes, RNVR). (2)

4 Mar 1944

Combined convoy OS 70 / KMS 44.

This combined convoy was assembled off Oversay on 4 March 1944.

It was made up of the following merchant vessels; Angelo (British, 2199 GRT, built 1940), Archangelos (Greek, 5692 GRT, built 1918), Baron Forbes (British, 3061 GRT, built 1915), Baron Maclay (British, 6317 GRT, built 1924), Baron Stranraer (British, 3668 GRT, built 1929), Bruse Jarl (Norwegian, 1890 GRT, built 1923), Cap Cantin (British (former French), 3317 GRT, built 1933), Carslogie (British, 3786 GRT, built 1924), Empire Nile (British, 6318 GRT, built 1921), Empire Rosalind (British, 7290 GRT, built 1943), Empire Spartan (British, 7009 GRT, built 1942), Empire Spey (British, 4292 GRT, built 1929), Eurybates (British, 6276 GRT, built 1928), Fort Aklavik (British, 7132 GRT, built 1943), Fort Gaspereau (British, 7134 GRT, built 1943), Fort Liard (British, 7133 GRT, built 1942), Fort Marin (British, 7159 GRT, built 1943), Fort Nakasley (British, 7132 GRT, built 1943), Fort Richelieu (British, 7130 GRT, built 1943), Groix (French, 9975 GRT, built 1922), Helencrest (British, 5233 GRT, built 1941), Hermiston (British, 4813 GRT, built 1939), Hopestar (British, 5267 GRT, built 1936), Isipingo (British, 7069 GRT, built 1930), Janeta (British, 4312 GRT, built 1929), Jenny (Norwegian, 4706 GRT, built 1928), Kana (British, 2783 GRT, built 1929), Langleetarn (British, 4908 GRT, built 1929), Leonidas (Greek, 4573 GRT, built 1929), Lorca (British, 4875 GRT, built 1931), Matheran (British, 8007 GRT, built 1942), Monkleigh (British, 5203 GRT, built 1927), Nanceen (French, 2895 GRT, built 1929), Nurani (British, 5414 GRT, built 1941), Porjus (Swedish, 2965 GRT, built 1906), Radmanso (Swedish, 4280 GRT, built 1914), Radport (British, 5355 GRT, built 1925), Redgate (British, 4323 GRT, built 1929), Samoa (British, 7219 GRT, built 1943), Slesvig (British, 3098 GRT, built 1938), Stal (British (former Danish), 2242 GRT, built 1921), Stanhope (British, 2337 GRT, built 1919), Thomas Holt (British, 3585 GRT, built 1929), Topdalsfjord (Norwegian, 4271 GRT, built 1921), Urbino (British, 5198 GRT, built 1918), Ville de Strasbourg (British, (former French), 7007 GRT, built 1920) and Wayfarer (British, 5068 GRT, built 1925).

The rescue ship Fastnet (British, 1415 GRT, built 1928) was also with the convoy.

On assembly the convoy was escorted by the escort carrier HMS Striker (Capt. W.P. Carne, RN), frigates HMS Exe (Cdr. C.E.E. Paterson, RN), HMS Moyola (Lt.Cdr. H.N. Lawson, RD, RNR), HMS Foley (A/Lt.Cdr. C.A.H. Bird, RNVR), corvettes HMS Armeria (T/Lt. M. Todd, RNR), HMS Burdock (Lt. H.M. Collier, RNR), HMS Clarkia (A/Lt.Cdr. J.O. Williams, RNR), HMS Dittany (T/Lt. S.W. Lock, RNVR), HMS Berkeley Castle (T/Lt. F.A. Darrah, RNVR) and the A/S trawler HMS Fusilier (T/Lt. F.M. Phillips, RNVR).

The following merchant vessels of the convoy returned to the U.K. after sailing; Angelo, Hopestar and Stal.

On 10 March 1944, the frigate HMS Foley parted company with the convoy to join the northbound combined convoy SL 150 / MKS 41 while the escort oiler San Tirso (British (tanker), 6266 GRT, built 1913) joined coming from this convoy.

On 16 March 1944, the convoy split into convoy OS 70 bound for Freetown and convoy KMS 44 bound for the Mediterranean.

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Convoy OS 70 was made up of the merchant vessels; Baron Stranraer, Cap Cantin, Fort Liard, Groix, Isipingo, Jenny, Porjus, Thomas Holt and Ville de Strasbourg.

On 15 March 1944, the merchant vessels Aelbert Cuyp (Dutch, 7086 GRT, built 1942), Empire Nerissa (British, 7086 GRT, built 1943), Fort Nashwaak (British, 7134 GRT, built 1943), Fort Norman (British, 7133 GRT, built 1942), Govert Flinck (Dutch, 7178 GRT, built 1942), Langleebrook (British, 4246 GRT, built 1930), Romney (British, 5840 GRT, built 1929) and Vernon L. Kellogg (American, 7176 GRT, built 1943) departed Gibraltar escorted by the sloop HMS Enchantress (Lt.Cdr. E.D.J. Abbot, DSC, RN), frigate HMS Ness (T/A/Lt.Cdr. R.H. Marchington, MBE, RNVR) and the corvette HMS Pimpernel (Lt. H.D. Hayes, RNR). These ships joined the combined convoy when it split.

On 16 March 1944, the following transports departed Casablanca to join the convoy; Empire Cabot (British, 6715 GRT, built 1941), Finistere (French, 1158 GRT, built 1909), Fort Fairford (British, 7134 GRT, built 1943), Isaac Coles (American, 7176 GRT, built 1942), Parkhaven (Dutch, 4803 GRT, built 1920) and Tilsington Court (British, 6910 GRT, built 1928). They were escorted by the minesweeping sloops Chevreuil, Gazelle and the patrol vessels USS PC-475 (Lt. W.W. Devine, Jr., USNR) and USS PC-480 (Lt.(jg) J.K. Miller, USNR).

On these ships joining on the 17th, the transports Empire Nerissa, Fort Liard, Langleebrook, Porjus and Romney were detached to Casablanca where they arrived later on the 17th. They were escorted by the two American patrol vessels as the two French minesweeping sloops had joined the convoy.

On 22 March 1944, the transports Finistere, Isaac Coles and Vernon L. Kellogg arrived at Dakar after having been detached from the convoy while the transport Hoggar (French, 5146 GRT, built 1923) joined the convoy coming from Dakar. The two French minesweeping sloops also proceeded to Dakar.

On 23 March 1944, the transports Cap Cantin and Fort Nashwaak arrived at Bathurst after having been detached from the convoy.

The convoy arrived at Freetown on 25 March 1944. Some ships of the convoy did not enter Freetown but proceed directly to other destinations.

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Convoy KMS 44, made up of the remaining ships, proceeded towards the Mediterranean with the original escort of the combined convoy.

On 17 March 1944, the following transports arrived at Gibraltar; Archangelos, Lorca, Redgate, Slesvig, rescue ship Fastnet and the escort oiler San Tirso arrived at Gibraltar together with the original escort of the combined convoy minus HMS Dittany.

The transports Baron Forbes, Kana, Monkleigh, Radport and Stanhope proceeded directly to Lissabon after the convoy had split. They were possible escorted by HMS Dittany which did not arrive with the other escort at Gibraltar on the 17th but only arrived there on the 20th.

The following ships of the convoy meanwhile directly entered the Mediterranean; Baron Maclay, Bruse Jarl, Carslogie, Empire Nile, Empire Rosalind, Empire Spartan, Empire Spey, Eurybates, Fort Aklavik, Fort Gaspereau, Fort Marin, Fort Nakasley, Fort Richelieu, Helencrest, Hermiston, Janeta, Langleetarn, Leonidas, Matheran, Nanceen, Nurani, Radmanso, Samoa, Topsdalfjord, Urbino and Wyfarer.

On passing Gibraltar they were joined by the transports Joshua Hendy (American, 7176 GRT, built 1943), Maycrest (British, 5923 GRT, built 1913) and Southgate (British, 4862 GRT, built 1926). Also a new escort joined for the passage through the Mediterranean, this was made up of the following ships; AA cruiser HMS Colombo (Capt. H.W. Williams, RN), frigate HMS Barle (Lt.Cdr. A.H. Davies, RNVR) and the corvettes HMS Bergamot (A/Lt.Cdr. W. McInnes, RNR), HMS Bryony (T/Lt. T. Hand, RNR), HMS La Malouine (Lt. W.A. Ives, RNR) and (the Yugoslavian) Nada. The submarine HMS Spiteful (Lt.Cdr. F.H. Sherwood, DSC, RCNVR) and the rescue tug HMRT Vagrant also joined the convoy.

On 18 February 1944, the transports Carslogie, Joshua Hendy and Maycrest arrived at Oran after having been detached from the convoy while the transports Benito Juarez (American, 7244 GRT, built 1943), City of Canterbury (British, 8331 GRT, built 1922), Crawford W. Long (American, 7176 GRT, built 1943), Crosby S. Noyes (American, 7176 GRT, built 1943), Joseph H. Hollister (American, 7176 GRT, built 1943), Joshua Seney (American, 7176 GRT, built 1942), Mayo Brothers (American, 7191 GRT, built 1942), Spindletop (British, 1155 GRT, built 1943), William Kent (American, 7187 GRT, built 1942) and Zacapa (American, 5013 GRT, built 1909) joined the convoy coming from Oran.

On 19 February 1944, the transports Fort Gaspereau, Hermiston, Janeta, Leonidas and Zapaca arrived at Algiers after having been detached from the convoy while the transports / tankers Empire Addison (British, 7010 GRT, built 1942), Empire Gain (British (tanker), 3738 GRT, built 1943), Empire Southey (British, 7041 GRT, built 1942), Empire Wordsworth (British (tanker), 9891 GRT, built 1942), Esneh (British, 1931 GRT, built 1919), Fort Ash (British, 7131 GRT, built 1943), Fort Glenora (British, 7126 GRT, built 1943), Fort la Traite (British, 7134 GRT, built 1942), Hermelin (Norwegian, 1683 GRT, built 1940), Linge (Dutch, 2114 GRT, built 1928), Meonia (Danish, 5214 GRT, built 1927), Parame (French, 2337 GRT, built 1918), Samettrick (British, 7219 GRT, built 1943), Samuel V. Shreve (British, 1813 GRT, built 1943) and Solarium (British, 6239 GRT, built 1936) joined the convoy coming from Algiers.

On 20 February 1944, the transports Brighton (British, 5359 GRT, built 1928), Fort Rae (British, 7132 GRT, built 1942) and Lightfoot (British, 1894 GRT, built 1922) joined the convoy coming from Philippeville.

On 20 February 1944, the transports Bruse Jarl, Empire Gain, Fort Rae and Radmanso arrived at Bone after having parted company with the convoy while the transports Empire Cameron (British, 7015 GRT, built 1941), Empire Copperfield (British, 6013 GRT, built 1943), Empire Viceroy (British, 7803 GRT, built 1943), Graiglas (British, 4312 GRT, built 1940), Ousel (British, 1533 GRT, built 1922), Sammex (British, 7219 GRT, built 1943) and Samson (British, 7219 GRT, built 1943) joined the convoy coming from Bone.

On 21 February 1944, the transports Empire Spartan, Empire Spey, Mayo Brothers, Nanceen, Parame and Solarium arrived at Bizerta as did HMS Colombo after having parted company with the convoy while the transport / tankers Asa Gray (American, 7176 GRT, built 1943), Elise (Norwegian (tanker), 7910 GRT, built 1931) and Meline (Norwegian (tanker), 6983 GRT, built 1918) joined the convoy coming from Bizerta.

On 22 February 1944, the transports Graiglas, Topsdalfjord arrived at Malta after having parted company with the convoy as did HMS Spiteful and the Yugoslavian corvette Nada while the tanker Egero (Norwegian (tanker), 7590 GRT, built 1929), transport Empire Noble (British, 7125 GRT, built 1944) and the bouy / lighthouse tender Darien II (British, 459 GRT, built 1892) joined the convoy coming from Malta.

On 22 February 1944, the transports / tankers Beaconsfield (British, 4635 GRT, built 1938), Corfell (British, 1802 GRT, built 1934), Dallington Court (British, 6889 GRT, built 1929), Destro (British, 3553 GRT, built 1920), Dunera (British, 11162 GRT, built 1937), Ekaterini Coumantarou (Greek, 7777 GRT, built 1917), Empire Grange (British, 6981 GRT, built 1943), Empire Peak (British, 7045 GRT, built 1943), Fort Bourbon (British, 7133 GRT, built 1942), Fort Glenlyon (British, 7132 GRT, built 1943), Fort Senneville (British, 7131 GRT, built 1942), Ocean Liberty (British, 7174 GRT, built 1942), Ocean Vulcan (British, 7174 GRT, built 1942), Riverton (British, 7307 GRT, built 1943), Samnebra (British, 7219 GRT, built 1943), San Rafael (Panamanian, 5379 GRT, built 1919), Van der Capelle (Dutch, 7037 GRT, built 1942), Zaanstroom (Dutch, 1646 GRT, built 1920) departed Augusta to join the convoy while the following transports / tankers parted company with the convoy and proceeded to Augusta; Asa Gray, Benito Juarez, Brighton, City of Canterbury, Crawford W. Long, Crosby S. Noyes, Empire Addison, Empire Cameron, Empire Copperfield, Empire Rosalind, Empire Southey, Empire Wordsworth, Esneh, Fort Aklavik, Fort Ash, Fort Glenora, Fort la Traite, Fort Marin, Fort Richelieu, Helencrest, Hermelin, Joseph H. Hollister, Joshua Seney, Langleetarn, Lightfoot, Linge, Ousel, Samettick, Sammex, Samoa, Samson, Samuel V. Shreve, Southgate, Spindletop and William Kent.

On 26 March 1944, the transports Beaconsfield, Corfell, Elise, Empire Noble, Empire Peak, Fort Glenlyon, Ocean Vulcan, Riverton, Samnebra and Van der Capelle arrived at Alexandria after having parted company with the convoy. Also HMS Barle and HMS La Malouine arrived at Alexandria.

The remainder of the convoy arrived at Port Said on 27 March 1944.