List of Allied convoy codes during World War II

This is a list of convoy codes used by the Allies during World War II There were over 300 convoy routes organized, in all areas of the world; each was designated by a two- or three letter code. List of Allied convoys during World War II by region provides additional information.

A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z

A

B

C

D

E

F

G

H
  • HA - Halifax to Curaçao 1942 (reverse AH)
  • HA - Heel of Italy to Augusta 1943–45 (reverse AH)
  • HB - Australia to India Troopships 1945
  • HC - Calcutta to Chittagong (reverse CH)
  • HF - Halifax to St John NB (reverse FH)
  • HG - Gibraltar to UK ("Homeward") 1939–42 (reverse OG)
  • HGF - Gibraltar to UK Fast
  • HHX - HX ships joining from Halifax
  • HI - Japanese convoys between Singapore and Moji
  • HJ - Halifax to St. John's NFL (reverse JH)
  • HK - Galveston ("Houston") to Key West (reverse KH)
  • HM - Holyhead to Milford Haven (reverse MH)
  • HN - Bergen to Methil ("Homeward from Norway")1939–40 (reverse ON)
  • HON - ON ships joining from Halifax
  • HP - Heel of Italy to Piraeus (reverse PH)
  • HS - Halifax to Sydney (reverse SH)
  • HT - Halifax to Trinidad (reverse TH)
  • HX - North America to UK, 1939–45 North Atlantic route (reverse ON).
  • HXA - HX ships via English Channel 1939–40, 1944–45
  • HXF - Halifax to UK Fast 1939–40

I

J

K

L

M

N

O
  • OA - UK (Thames) Outbound 1939–41
  • OB - UK (Liverpool) Outbound 1939–41
  • OC - Melbourne to Newcastle (reverse CO)
  • OG - UK ("outbound") to Gibraltar (reverse HG)
  • OM - Oran to Marseilles 1944 (reverse MO)
  • ON - Methil to Bergen ("Outbound Norway") 1939–40
  • ON - UK to North America 1941–45 North Atlantic route; this series ran alternately Fast and Slow but after 1943 Fast only
  • ON (F) - Fast ON 1941–43 (reverse HX)
  • ON (S) - Slow ON 1941–43 (reverse SC)
  • ONS - UK to North America 1943–45 North Atlantic route, replaced ON (S) (reverse SC)
  • OS - Liverpool to Freetown ("Outbound South")
  • OSS - continuation of OS route south
  • OT - Trinidad to North Africa ("Outbound Trinidad")
  • OT - Trinidad to Caribbean local ("Outbound Trinidad")
  • OW - Australia to India ("Outbound West")

P

Q

R

S

T

U

V

W

X

Y

Z

References
  • Arnold Hague: The Allied Convoy System 1939–1945 (2000) ISBN 1-55125-033-0 (Canada). ISBN 1-86176-147-3 (UK)
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