GZ convoys


The GZ convoys were a series of Caribbean convoys which ran during the Battle of the Atlantic in World War II.
They take their name from the route: Guantanamo, Cuba to Cristóbal, Colón, Panama

Overview

The GZ series was the reverse of ZG series that ran from 31 August 1942 until 17 May 1945. There were 139 GZ convoys, comprising 1,151 individual ship listings. The escort ships for these convoys are not listed in the reference cited. Almost all ships listed in a convoy made the complete trip between Guantanamo and Cristóbal with a few going to Kingston, Jamaica, or Cartagena, Colombia.
The series started with GZ 1 through GZ 139 with only 1 convoy being cancelled, GZ 31. There are only two ships listed as being lost, and the losses were not due to enemy action, one grounded and broke in two and the other was from a collision.

Convoy List

1942

ConvoyDeparture
Date		Arrival
Date		No.of Merchant ShipsNotes
GZ 131 August 19423 September 194280 vessels lost
GZ 27 September 194211 September 1942110 vessels lost
GZ 313 September 194217 September 1942140 vessels lost
GZ 420 September 194224 September 1942120 vessels lost
GZ 527 September 194230 September 1942150 vessels lost
GZ 64 October 19429 October 1942280 vessels lost
GZ 712 October 194216 October 1942120 vessels lost
GZ 7A12 October 194216 October 194230 vessels lost
GZ 816 October 194219 October 194260 vessels lost
GZ 923 October 194226 October 1942150 vessels lost
GZ 1031 October 19424 November 1942180 vessels lost
GZ 118 November 194212 November 1942160 vessels lost
GZ 1216 November 194219 November 1942200 vessels lost
GZ 1324 November 194227 November 1942240 vessels lost
GZ 142 December 19425 December 1942170 vessels lost
GZ 1510 December 194213 December 1942130 vessels lost
GZ 1618 December 194221 December 1942150 vessels lost
GZ 1726 December 194229 December 1942180 vessels lost

1943

1944

ConvoyDeparture
Date		Arrival
Date		No.of Merchant ShipsNotes
GZ 555 January 19449 January 1944170 vessels lost
GZ 5615 January 194419 January 1944140 vessels lost
GZ 5724 January 194428 January 1944190 vessels lost
GZ 583 February 19447 February 1944140 vessels lost
GZ 5913 February 194417 February 1944160 vessels lost
GZ 6023 February 194427 February 1944160 vessels lost
GZ 615 March 19449 March 194470 vessels lost
GZ 6215 March 194419 March 1944140 vessels lost
GZ 6324 March 194428 March 1944200 vessels lost
GZ 644 April 19448 April 1944160 vessels lost
GZ 6514 April 194417 April 1944190 vessels lost
GZ 6623 April 194428 April 194490 vessels lost
GZ 674 May 19448 May 194450 vessels lost
GZ 6814 May 194418 May 194480 vessels lost
GZ 6923 May 194427 May 1944110 vessels lost
GZ 703 June 19447 June 1944130 vessels lost
GZ 718 June 194411 June 1944140 vessels lost
GZ 7213 June 194417 June 1944200 vessels lost
GZ 7318 June 194422 June 1944120 vessels lost
GZ 7421 June 194425 June 1944110 vessels lost
GZ 7528 June 19442 July 1944110 vessels lost
GZ 763 July 19447 July 1944140 vessels lost
GZ 778 July 194412 July 1944140 vessels lost
GZ 7813 July 194417 July 1944130 vessels lost
GZ 7918 July 194422 July 1944110 vessels lost
GZ 8023 July 194427 July 1944130 vessels lost
GZ 8128 July 1944Not listed40 vessels lost
GZ 822 August 19446 August 194430 vessels lost
GZ 837 August 194411 August 194430 vessels lost
GZ 8412 August 194415 August 194490 vessels lost
GZ 8517 August 194421 August 194490 vessels lost
GZ 8622 August 194425 August 194490 vessels lost
GZ 8727 August 194431 August 194470 vessels lost
GZ 881 September 19445 September 194490 vessels lost
GZ 896 September 194410 September 194451 vessel lost; Hindoo, collided with Australia Star and sank in the Caribbean Sea
GZ 9010 September 194413 September 194450 vessels lost
GZ 9116 September 194420 September 194450 vessels lost
GZ 9221 September 194425 September 194440 vessels lost
GZ 9326 September 194430 September 194460 vessels lost
GZ 941 October 19444 October 194420 vessels lost
GZ 956 October 19449 October 194420 vessels lost
GZ 9611 October 194414 October 194470 vessels lost
GZ 9716 October 194420 October 1944110 vessels lost
GZ 9821 October 194424 October 194430 vessels lost
GZ 9926 October 194429 October 194430 vessels lost
GZ 10031 October 19443 November 194440 vessels lost
GZ 1015 November 19449 November 194470 vessels lost
GZ 10210 November 194413 November 194410 vessels lost
GZ 10315 November 194418 November 194450 vessels lost
GZ 10420 November 194423 November 194410 vessels lost
GZ 10525 November 194428 November 194430 vessels lost
GZ 10630 November 19444 December 194420 vessels lost
GZ 1074 December 19447 December 194410 vessels lost
GZ 10810 December 194413 December 194430 vessels lost
GZ 10915 December 194419 December 194450 vessels lost
GZ 11020 December 194424 December 194420 vessels lost
GZ 11124 December 194427 December 1944130 vessels lost
GZ 11230 December 19443 January 194570 vessels lost

1945

ConvoyDeparture
Date		Arrival
Date		No.of Merchant ShipsNotes
GZ 1134 January 19457 January 194510 vessels lost
GZ 1149 January 194512 January 194520 vessels lost
GZ 11514 January 194517 January 194510 vessels lost
GZ 11619 January 194522 January 194540 vessels lost
GZ 11724 January 194527 January 194530 vessels lost
GZ 11829 January 19451 February 194570 vessels lost
GZ 1193 February 19456 February 194540 vessels lost
GZ 1209 February 194512 February 194530 vessels lost
GZ 12113 February 194517 February 194540 vessels lost
GZ 12218 February 194522 February 194530 vessels lost
GZ 12323 February 194526 February 194510 vessels lost
GZ 1241 March 19454 March 194530 vessels lost
GZ 1255 March 19459 March 194560 vessels lost
GZ 12610 March 194513 March 194530 vessels lost
GZ 12715 March 194519 March 1945110 vessels lost
GZ 12820 March 194523 March 194540 vessels lost
GZ 12925 March 194529 March 194590 vessels lost
GZ 13030 March 19452 April 194570 vessels lost
GZ 1314 April 19457 April 194520 vessels lost
GZ 1329 April 194513 April 194540 vessels lost
GZ 13314 April 194517 April 194510 vessels lost
GZ 13419 April 194523 April 194510 vessels lost
GZ 13524 April 194527 April 194510 vessels lost
GZ 13628 April 194530 April 194510 vessels lost
GZ 1374 May 19457 May 194510 vessels lost
GZ 1389 May 194512 May 194530 vessels lost
GZ 13914 May 194517 May 194530 vessels lost