| 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 |
Code |
Notes |
| H.A. | Ancona - Bari |
| H.A. | Halifax - Curacao (See C. in C.U.S. Fleet 161OZ/9/6/42 and N.S.H.Q. Ottawa 1917Z/17/6/42) |
| H.A. | Heel of Italy - Augusta. (Amended) |
| H.B. | Troop convoys - S.W. Pacific to India. (ComsouwestpaoI 270315 Dec 1944) |
| H.B. | Bilbao, Spain - Milford Haven. (Cancelled) |
| H.C. | Calcutta - Chittagong. (H.C.1 sailed 24/10/43) |
| H.F. | Halifax - St John (N.B.) (N.S.H.Q. Ottawa 2217Z/7/9/42) |
| H.G. | Gibraltar-U.K. |
| H.H.X. | From Halifax to connect with H.X. at M.O.M.P., commencing26th May 1943. (N.S.H. Q. Ottawa 062200 May) |
| H.J. | Halifax - St Johns (N.F.) (N.S.H.Q. Ottawa 1525Z/17/5/42) |
| H.K. | Galveston - Key West. (B.R.O. Galveston 1829Z/9/9/42) |
| H.M. | Holyhead - Milford Haven. (Cancelled) |
| H.N. | Bergen to Methil. (Homeward Norwegian) (Obsolete afterApril, 1940) |
| H.P. | Heel of Italy - Piraeus (H.P.1 to arrive 27.10.1944) |
| H.S. | Halifax - Sydney (C.B.) (N.S.H.Q. Ottawa 1525Z/17/5/42) |
| H.T. | Halifax to Trinidad. (H.T.1 sailed 22.5.1942)(Canadian tanker convoy). (Discontinued when AH and H.A. began) |
| H.X. | Halifax (later New York) to U.K. (Commenced 19.9.39).(9 knots, D.T.D. 0019B/15/7/41). |
| H.X.A. | Ships for and from South and East Coast U.K. ports. |
| H.X.F. | Halifax to U.K. fast group. |
Data obtained from The National Archives kindly provided by Roger Hollywood.