Collective Call signs

These were Company Collective Call Signs, which were sent out by Portishead Radio to notify all ships within that company, that there was collective traffic for them. The same call signs were used on internal company H/F schedules.  Many Radio Officers will remember them and have used them.

Callsign

Allocated to

GACQ ADMIRALTY
GBXZ Any British Warship
GGSC Ships In Company [Admiralty]
GTZA OCEAN FLEETS LTD
GTZB ALFRED HOLT & CO
GTZC CUNARD STEAMSHIP CO LTD
GTZD P & O PASSENGER DIVISION
GTZE ELDER DEMPSTER LINES
GTZF ELDERS & FYFFES LTD
GTZG PRINCE LINE LTD
GTZH KELVIN HUGHES
GTZJ SIR WILLIAM REARDON SMITH & SONS
GTZK THOMAS HAMLING & CO LTD
GTZL ANDREW WEIR & CO LTD
GTZM MARCONI INTERNATIONAL MARINE CO LTD
GTZN JOHN SWIRE & SONS LTD
GTZP SHANGHAI LICENSED PILOTS ASSN
GTZQ BLUE STAR LINE LTD
GTZR INTERNATIONAL MARINE RADIO CO LTD
GTZS BRITISH TRANSPORT COMM
GTZT ROYAL MAIL LINES LTD
GTZU P & O STEAM NAVIGATION CO
GTZV SIR R. ROPNER & CO LTD
GTZW BRITISH RAIL WESTERN REGION
GTZX BP TANKER CO LTD
GTZY Not known or unallocated
GTZZ WIRELESS SUBSCRIPTION PRESS
GWZA Not known or unallocated
GWZB UNION CASTLE LINE
GWZC PORT LINE LTD
GWZD BOOTH STEAMSHIP CO
GWZF TURNER BRIGHTMAN
GWZG H.E. MOSS & CO
GWZH Not known or unallocated
GWZJ MANCHESTER LINERS
GWZK ESSO PETROLEUM CO LTD
GWZL PALM LINE LTD
GWZM T & j BROCKLEBANK LTD
GWZN FURNESS WITHY & CO LTD
GWZP Not known or unallocated
GWZQ P HENDERSON & CO
GWZR STANHOPE STEAMSHIIP CO LTD
GWZS THE UNITED MOLASSES CO LTD
GWZT Not known or unallocated
GWZU Not known or unallocated
GWZV PICKERING & HALDANE STEAM TRAWLER CO
GWZW OVERSEAS TOWAGE & SALVAGE CO
GWZX THOS & JAS HARRISON LTD
GWZY MARKHAM CREEK LTD
GWZZ CONSTANTINE HOLDINGS LTD
GZTA LONDON & OVERSEAS FREIGHTERS LTD
GZTB SILVER LINE LTD
GZTC ASIATIC STEAM NAV CO LTD
GZTD KELLER LINE (UK) LTD
GZTE MOBIL MARINE SERVICES LTD
GZTF Not known or unallocated
GZTG DONALDSON BROS LTD
GZTH NERA (UK) LTD
GZTJ CONSOLIDATED FISHERIES LTD
GZTK ASSOCIATED HUMBER LINES
GZTL HUDSON BROS TRAWLERS LTD
GZTM KING LINE LTD
GZTP WATTS WATTS & CO LTD
GZTQ Not known or unallocated
GZTR SHAW SAVILL & ALBION CO LTD
GZTS New Zealand Shipping Company/ Federal Steam Navigation Company
GZTT HOLDER BROS LTD
GZTU Not known or unallocated
GZTV CAMPBELL BROS & CO
GZTW J & C HARRISON LTD
GZTX Not known or unallocated
GZTY KINGSTON STEAM TRAWLING CO LTD
GZTZ CAIRNS NOBLE & CO LTD
GZUA AUSTRALIAN ASSOCIATED PRESS
GZUB KRISTIAN JEBSEN (UK) LTD
GZUC CRAIG STORES (ABDN) LTD
The remainder of the GZU- Callsigns appear to be unallocated.
GZWA Not known or unallocated
GZWB ELLERMAN LINES LTD
GZWC ELLERMAN’S WILSON LINE LTD
GZWD CAYZER IRVINE & CO LTD
GZWE CONTAINER FLEETS LTD
GZWF SHELL TANKERS LTD
GZWG AIR MINISTRY
GZWH Not known or unallocated
GZWJ PANOCEAN SHIP MANAGEMENT LTD
GZWK H. MARKHAM COOK LTD
GZWL CRAWFORD SHIPPING CO LTD
GZWM MEDOMSLEY STEAMSHIP CO LTD
GZWN BURIES MARKES LTD
GZWP UNITED TOWING CO LTD
GZWQ Not known or unallocated
GZWR J & J DENHOLM (MANAGEMENT) LTD
GZWS Not known or unallocated
GZWT HELLYER BROS LTD
GZWU ATHEL LINE LTD
GZWV CHR SALVESEN & CO
GZWW MANX MARINE TELECOMMUNICATIONS
GZWX BIBBY BROS & CO
GZWY FRANK STRICK & CO
GZWZ HUNTING & SON LTD
GZXA RICHARD IRVIN & SONS
GZXB ADMIRALTY
GZXC STANDARD-VACUUM TRANS CO LTD
GZXD F T EVERARD & SONS LTD
GZXE JOHN WOOD & SON LTD
GZXF REDIFON LTD
GZXG BEN LINE STEAMERS LTD
GZXH NORTH STAR FISHING CO
GZXJ LAMPORT & HOLT LINE LTD
GZXK THE PACIFIC STEAM NAV CO
GZXL COMMON BROS LTD
GZXM BRITISH & COMMONWEALTH (GROUP MNGMT)
GZXN WALPORT LTD
GZXP OVERSEAS TANKSHIP (UK) LTD
GZXQ SUGAR LINE LTD
GZXR P & O BULK SHIPPING DIVISION
GZXT THOMAS DAVIDSON
GZXU MALCOLM SMITH LTD
GZXV ERICSSON MARINE
GZXW CANADIAN PACIFIC STEAMSHIPS LTD
GZXX ASSOCIATED ELECTRICAL INDUSTRIES LTD
GZXX SCOTTISH SHIP MANAGEMENT
GZXY NATIONAL MARITIME BOARD
GZXZ P & O GENERAL CARGO DIVISION
That is the list as at 11.7.1974

 

2 thoughts on “Collective Call signs

  1. GGSC was used by Admiralty it meant SHIPS IN COMPANY – this I believe referred to groups of warships at sea. I last saw it a hard copy book issued to ships and think it was titlled BRITISH SHIPS CALLSIGNS it was an official publication. i certainly recall seeing it on the Derbyshire n 1953-53. Does anyone else remember this publication.? Cheers, Roger

    • This reply is somewhat late… but just by a few years.

      GGSC is still assigned to Ships In Company. It is used to address any ship or vessel in company, usually by visual signalling.

      I have received and relayed the callsign only once (post Gulf War 1991, using a signal light) to address warships in company with congratulatory messages as they passed a Coast Station where I was operating.

      The publication in question is Allied Communications Publication 113 (ACP-113). The extant edition is AI (i.e. edn 35). It is dated January 2012.

      The source document and amendment signals can be downloaded at:
      http://jcs.dtic.mil/j6/cceb/acps/acp113/

      ACP-113 Section 4 details Indefinite and Collective Merchant Ships Call Signs.

      Regards to all.

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