U-Boat Operations

Operations information for U-66
13.05.1941 - 11.06.1941 First Sailing - active patrol U-66 left Kiel under the command of Richard Zapp on 13th May 1941 and arrived at return on 11th Jun 1941 after just over four weeks.
23.06.1941 - 05.08.1941 Second Sailing - active patrol On the 23rd Jun 1941, U-66 left Lorient under the command of Richard Zapp and after just over six weeks arrived at return on 5th Aug 1941. Richard Zapp hit four ships on this patrol, three of these ships were in convoy: One was from convoy OG-67 and two were from convoy SL-78. On 29th Jun 1941 he sank the Greek 4,345 ton George J Goulandris, sailing with convoy SL-78. On 29th Jun 1941 he sank the Greek 5,686 ton Kalypso Vergotti, a member of convoy SL-78. On 30th Jun 1941 he sank the British 5,614 ton St Anselm. On 19th Jul 1941 he sank the British 3,433 ton Holmside, part of convoy OG-67.
28.08.1941 - 09.11.1941 Third Sailing - active patrol U-66 departed under Richard Zapp from Lorient on 28th Aug 1941 and arrived at return on 9th Nov 1941 after ten and a half weeks. Richard Zapp hit one ship on this patrol. On 26th Sep 1941 he sank the Panamanian 7,052 ton IC White.
25.12.1941 - 10.02.1942 Fourth Sailing - active patrol U-66 left Lorient under the command of Richard Zapp on 25th Dec 1941 and after more than six weeks arrived at return on 10th Feb 1942. Richard Zapp hit five ships on this patrol. On 18th Jan 1942 he sank the American 6,635 ton Allan Jackson. On 19th Jan 1942 he sank the Canadian 7,988 ton Lady Hawkins. On 22nd Jan 1942 he sank the Panamanian 5,335 ton Olympic. On 24th Jan 1942 he sank the American 8,017 ton Venore. On 24th Jan 1942 he sank the British 8,139 ton Empire Gem.
21.03.1942 - 27.05.1942 Fifth Sailing - active patrol On the 21st Mar 1942, U-66 left Lorient under the command of Richard Zapp and arrived at return on 27th May 1942 after nine and a half weeks. Richard Zapp hit seven ships on this patrol, one was from convoy ON-87. On 14th Apr 1942 he sank the Greek 2,116 ton Korthion. On 16th Apr 1942 he sank the Dutch 7,329 ton Amsterdam. On 17th Apr 1942 he sank the Panamanian 11,020 ton Heinrich von Riedemann. On 26th Apr 1942 he sank the American 5,513 ton Alcoa Partner. On 29th Apr 1942 he sank the Panamanian 10,354 ton Harry G Seidel. On 2nd May 1942 he sank the Norwegian 7,624 ton Sandar. On 3rd May 1942 he damaged the British 12,502 ton Geo W McKnight, from convoy ON-87. You can read more about the Norwegian ship listed for this patrol at www.warsailors.com. Click the link for more information on Sandar.
23.06.1942 - 29.09.1942 Sixth Sailing - active patrol U-66 departed under Friedrich Markworth from Lorient on 23rd Jun 1942 and after fourteen weeks arrived at return on 29th Sep 1942. Friedrich Markworth hit nine ships on this patrol. On 9th Jul 1942 he sank the Yugoslavian 6,363 ton Triglav. On 26th Jul 1942 he sank the Brazilian 4,942 ton Tamandaré. On 28th Jul 1942 he sank the British 5,150 ton Weirbank. On 6th Aug 1942 he sank the 766 ton Rozewie. On 29th Aug 1942 he sank the American 5,356 ton Topa Topa. On 30th Aug 1942 he sank the American 5,637 ton West Lashaway. On 30th Aug 1942 he sank the Panamanian 6,049 ton Sir Huon. On 31st Aug 1942 he sank the British 8,621 ton Winamac. On 9th Sep 1942 he sank the Swedish 6,390 ton Peiping. U-66 laid mines on this patrol. These mines were hit by 2 ships. The 32 ton British HMS MTB 339 was damaged by a mine on 2nd Aug 1942. The 32 ton British HMS MTB 342 was damaged by a mine on 2nd Aug 1942.A mine laid by U-66 also damaged a US Coast Guard cutter (name so far unknown) near Port Castries, St Lucia on 29th July 1942.
09.11.1942 - 11.11.1942 Seventh Sailing U-66 left Lorient under the command of Friedrich Markworth on 9th Nov 1942 and arrived at return on 11th Nov 1942 after two days.
06.01.1943 - 24.03.1943 Eighth Sailing - active patrol On the 6th Jan 1943, U-66 left Lorient under the command of Friedrich Markworth and after eleven weeks arrived at return on 24th Mar 1943. Friedrich Markworth hit two ships on this patrol. On 1st Feb 1943 he sank the French 113 ton Joseph Elise. On 27th Feb 1943 he sank the British 4,312 ton St Margaret.
07.04.1943 - 01.09.1943 Ninth Sailing - active patrol U-66 departed under Friedrich Markworth from Lorient on 7th Apr 1943 and arrived at return on 1st Sep 1943 after twentyone weeks. Friedrich Markworth hit three ships on this patrol. On 10th Jun 1943 he sank the American 10,173 ton Esso Gettysburg. On 2nd Jul 1943 he sank the American 10,195 ton Bloody Marsh. On 22nd Jul 1943 he damaged the American 10,172 ton Cherry Valley.
16.01.1944 - 06.05.1944 Tenth Sailing U-66 left Lorient under the command of Gerhard Seehausen on 16th Jan 1944 and after nearly sixteen weeks arrived at return on 6th May 1944. Gerhard Seehausen hit four ships on this patrol. On 26th Feb 1944 he sank the British 5,313 ton Silvermaple. On 1st Mar 1944 he sank the French 5,202 ton Saint Louis. On 5th Mar 1944 he sank the British 4,964 ton John Holt. On 21st Mar 1944 he sank the British 4,275 ton Matadian.

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