This was the designation of a British series of assault convoys (together with a numerical and sometimes a literal suffix) for ‘Zipper’ and related undertakings associated with the return from India to Malaya (August/September 1945).
The series comprised five sub-series in the form of the 'JMA', 'JMB', 'JME', 'JMF' and 'JMG' convoys.
The 'JMA' series comprised the JMA.1F convoy of 21 August/12 September from Bombay to the Morib beach-head with the 9,248-ton British Empire Pride; the JMA.1S convoy from 27 from Bombay to western Malaya with the 2,588-ton British Cerib; the rom 27 August); the JMA.2BS convoy of 29 August/12 September from Bombay to Port Dickson and Port Swettenham with the 7,297-ton British Empire Beauty, 7,359-ton British Empire General, 7,072-ton British Empire Guinevere, 7,457-ton Empire Meteor, 7,54-ton British Empire Miranda, 7,487-ton British Empire Niger, 7,086-ton British Empire Prome, 5,137-ton British Eskbank, 7,132-ton British Fort Aklavik, 7,128-ton British Fort Cadotte, 7,100-ton British Fort Chesterfield, 7,219-ton US Frederick Banting, 6,202-ton British Geologist, 7,782-ton British Glen Affric and 5,041-ton British Havildar; the JMA.2C convoy of 2/12 September from Bombay to Port Dickson with the 14,462-ton British Arawa, 14,134-ton Dutch Boissevain and 14,204-ton British Esperance Bay; the JMA.3 convoy of 6/19 September from Bombay to Port Swettenham with the 7,575-ton British Empire Rani, 6,828-ton British Empire Voice, 7,368-ton British Floristan II, 7,126-ton British Fort Glenora and 7,134-ton British Fort Meductic; and the JMA.3P convoy of 6/19 September from Bombay to Port Swettenham with the 7,318-ton British Empire Takoradi.
The JMB series comprised only the JMB.2S convoy of 4/12 September from Bombay to Port Swettenham with the 3,194-ton British Barpeta.
The JME series comprised the JME.1F convoy of 3/11 September from Madras to Singapore with the 15,551-ton British Almanzora, 8,331-ton British City of Canterbury and 9,809-ton British commissioned infantry landing ship Glenroy, and the JME.2S convoy of 9 September from Mardas to Port Swettenham with the 7,134-ton British Fort Finlay.
The JMF series comprised the JMF.1F convoy of 2/12 September from Vizagapatam to Port Swettenham with unsdpecified ships, and the JMF.1S convoy of 30 August/9 September from Vizagapatam to Port Swettenham with the 7,126-ton Fort Enterprise and 7,134-ton British Fort Gaspereau.
The JMG series comprised the JMG.1 convoy of 24 August to 9 September from Bombay to Port Swettenham with the 3,370-ton British E Sang, and the JMG.2 convoy of 4/9 September from Colombo to western Malaya with the 2,871-ton Norwegian Belnor and British 7,832-ton Empire Byng.