"I love Indicator Loop Stations"

2022-10-08 14:28:57

Bribie Island, Australia Oban Bay, Scotland Nahant, Massachussetts AROUND THE WORLDThis is the home page for the anti-submarine magnetic indicator loop research project. Indicator Loops are long lengths of cable laid on the seafloor of harbours to detect enemy submarines. They were developed by the Royal Navy in the early 1900s and first trialled at the end of WW1. They were then successfully deployed in WW2 in British ports both at home, in the Dominions (Australia, Canada, New Zealand, South Africa, Kenya, Ceylon, Penang) or in allied harbours (Iceland, Holland, Dardanelles). By 1942 the United States had adapted this technology for its own needs. If you have any feedback please email me: Dr Richard WaldingResearch Fellow - School of ScienceGriffith University Brisbane, Australia Email: [email protected] TECHNICAL How an indicator loop worksReading a US Navy loop signature Who made the Loop cables? Harbour Defence ASDIC (HDA)John Caldecott FRS, and Alexander CrichtonMitchell FRSE - geomagneticians of note.INDICATOR LOOPS AROUND THE WORLDRoyal NavyOverview of Royal Navy loop stationsOban (Argyll, Scotland)Isle of May (Firth of Forth, Scotland)Bereshaven & Queenstown (now called Bere Is. and Cobh, Ireland)Cromarty (Moray Firth, Scotland)Portballintrae and Orlock (Antrim, Northern Ireland)Loch Ewe (North West Scotland). Guard loops and Controlled Mining only.Sheppey Island, Kent) - Shellness and Sheerness: Guard loops and Controlled Mining at only.Scapa Flow, Orkney IslesPlymouthThe Solent: Portsmouth & the Isle of Wight - Hatherwood, Bouldnor, Bembridge, Culver, Nab Tower, Horse Sands Fort, No Mans Fort, PortsmouthPortland (HMS Osprey)PenangCumbraeRosythDunoonTrincomalee (Ceylon)Crete (Suda Bay) GreeceMalta Haifa Palestine (Israel)Alexandria (Egypt)Algiers (Algeria, North Africa)Dardanelles (Turkey)Bosphorus - northern end (Turkey)Smyrna (now Izmir, Turkey)Hong KongSingaporeWalcheren Island - Flushing to Breskens (Netherlands)South Africa (Capetown, Durban, East London, Port Elizabeth)Mombasa, Kenya: in Kilindini HarbourManza Bay, Tanga, TanzaniaIceland (Hvalfjordhur or Hvalfjordur)Royal Australian NavyMoreton Bay Harbour Defences.These were located at several naval installations in and around Moreton Bay as follows: RAN 2(A): Controlled Mining and Guard Loop Station at Tangalooma; RAN 2(B): Controlled Mining and Guard Loop Station at Fort Bribie; RAN 3: Controlled Mining and Guard Loop Station at Cowan Cowan; RAN 4: Indicator Loop and Harbour Defence ASDIC Station at Woorim, Bribie Island RAN 7: Indicator Loop and Harbour Defence ASDIC Station at Comboyuro Point, Moreton Island; RAN 9: Indicator Loop and Photo-electric beam Station, Myrtletown; Also of interest: Fort Bribie, including RAN 2 Controlled Mining Station. Fort Skirmish, Woorim, Bribie Island (Skirmish Battery) Toorbul Radar Station No. 210 run by the RAAF Sydney (Loops, HDA, PE Beam)Fremantle (Loops)Darwin (Loops)Newcastle (Loop and Controlled Minefield)Port Phillip - Victoria (PE Beam)Broken Bay (Loops and Controlled Minefield)Port Kembla (Loop)Port Stephens (Loop)Botany Bay (Controlled Minefield)Port Moresby (Indicator Loops); Port Moresby Guns (Gun Battery remains)Royal New Zealand NavyAuckland, Wellington & ChristchurchRoyal Canadian Navy Overview of indicator loops in CanadaSaint JohnAntisubmarine School at Digby (Nova Scotia)Prince Rupert (Port Edwards) United States Navy Casco Bay (Portland, Maine): 1A Bailey Island, 1B South Portland (Cape Elizabeth), 1F Peaks Island/Fort William 1C North Scituate (Fourth Cliff to Provincetown, Massachusetts); and Rhode Island (Massachusetts) 1D Nahant, East Point (Boston, Massachusetts) 1E Gloucester, 25 mi N of Boston (Massachusetts) 1G Portsmouth (Appledore Island, Maine) 1H Fort Burnside 1I South Westport at Goosebury Neck (or Westport Point); Mishaum Pint HECP (Massachusetts) 1X Argentia - Naval Base (Newfoundland) Fort Tilden (New York) Harbor Entrance Control Post (HECP #2) Fort Hancock (New Jersey) HECP #1, Sandy Hook (& Spermacetti Cove). Combined webpage with Fort Tilden.Fort Wadsworth HECP, Staten Island, New York. Not a loop station but an administrative centre for HECP1 and 2.Fort Wright - Fishers Island (HECP) Fort Miles on Cape Henlopen near Lewes Ocracoke Naval Station (North Carolina)Panama Woody Island, Kodiak (Alaska) Cable laying ship USCG Pequot