Bass Strait Triangle

Bass Strait Triangle

The Bass Strait Triangle is a term for the waters that separate the states of Victoria and Tasmania, including Bass Strait, in south-eastern Australia. Inspired by the Bermuda Triangle, the term appears to have been first used following the Valentich Disappearance in 1978 although the region had a bad reputation (never ascribed to supernatural forces, however) long before that.

Geography of Bass Strait

Bass Strait is a generally shallow (average depth of 30 metres) stretch of water approximately 300 kilometres wide and 200 kilometres from north to south, encompassed by the entire northern coastline of Tasmania and central to eastern coast of Victoria. The prevailing winds and currents are westerly, the latter being divided by King Island, Tasmania at the western entrance to the strait, causing unpredicable sea conditions, especially when strong winds occur. For example, strong southerly winds can cause a strong northerly current reflecting from the Victorian coast. The combination of winds, currents, tidal flow and the shallow bottom often lead to tall waves, often of short length, with a confused short swell often conflicting in direction.

All shipping to the busy ports of Melbourne, Stanley, Burnie, Devonport, Bell Bay and Launceston and the Bass Strait islands such as King Island and Flinders Island must pass through Bass Strait, and it is also the route of choice for many ships passing from the Australian west to east coasts. Most air traffic between Tasmania and the Australian mainland flies at least in part over or adjacent to it.

History of Incidents - Marine

Bass Strait was discovered following the wreck of the ship "Sydney Cove" in 1797 and one of the vessels engaged in the salvage operation, the sloop "Eliza", went missing on her return voyage to Sydney. Hundreds of vessels up to the size of bulk carriers have come to grief in Bass Strait since that time through hitting reefs, running aground on the coastline or on river bars while entering port, or foundering due to stress of weather, some dozens being lost without trace.

Actual north-south (and vice versa) crossing of Bass Strait seldom occurred until after Melbourne was established in 1835. During the period 1838-40 at least seven vessels were lost with all hands on their way to or from the new settlement, wreckage from only three being identified. Rumours that some of these vessels had fallen victim to wreckers appear baseless, the main cause probably being bad weather and poor charts. Over the following century dozens of other vessels have gone missing after entering the Straits, many without trace. One of the most significant disappearances was that of the British warship "Sappho" in 1858, in which well over one hundred lives were lost.

History of Incidents - Aviation

The first aircraft to go missing in Bass Strait was a military Airco DH.9A that was engaged in a search for the missing schooner "Amelia J" in 1920 - it was believed to have gone into the sea off the southern coast of Flinders Island.

One of the first Bass Strait airliners, the De Havilland Express "Miss Hobart", went missing soon after entering service in 1934, only a small amount of wreckage being found on the Victorian coast. A year later a similar aircraft was lost with all on board off Flinders Island. The cause of both accidents was probably a combination of human error with the known poor design of the aircraft.

During the Second World War several aircraft, mostly RAAF Bristol Beaufort bombers, were lost during exercises in Bass Strait while on training flights out of air bases, mostly Sale, Victoria. These accidents were probably caused by the inexperienced crew crashing into the sea while performing low-level bombing practice - similar accidents occurred over land.

In 1972 a De Havilland Tiger Moth flown by Brenda Hean and Max Price went missing while on a flight from Tasmania to Canberra as part of protests against the flooding of Lake Pedder for a hydroelectricity scheme. It was believed to have crashed at sea somewhere between the East Coast and Flinders Island. Sabotage by pro-development interests was alleged. Fact|date=October 2008

The most famous incident, and the one that has been the inspiration for paranormal explanations, was the Valentich Disappearance in 1978.


* Broxam & Nash, "Tasmanian Shipwrecks", Volumes I and II, Navarine Publishing, Canberra, 1998 and 2000, ISBN 0-9586561-5-0 and ISBN 0-9586561-6-9
* Kevin Killey and Gary Lester, "The Devil's Meridian", Lester-Townsend, 1980, ISBN 0-9498530-1-1
* Macarthur Job, "Air Crash", Volume One, Aerospace Publications, Canberra, 1991, ISBN 1-875671-11-0
* Jack Loney, "Mysteries of the Bass Strait Triangle", Neptune Press, 1st ed. 1980. 3rd ed. 1984 (ISBN 0-9091315-3-8)

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