A Greek navy minesweeper, Kallisto, was sliced in two by a merchant ship outside Piraeus.
The enormous damage, Greek TV reported, is due in part to the construction materials of the warship. It is made of reinforced plastic and fibreglass, which makes it vulnerable to impact.
Kallisto‘s fibreglass hull was built by Vosper Thornycroft in the early 1980s (then called HMS Berkeley) before being moved to Greece between 2000 and 2001.
When built in the 1980s, Kallisto was one of the largest warships ever built with a fibreglass hull. Mine countermeasures ships are typically built with non-metallic hulls, in part to help reduce their vulnerability to magnetic mines. This also reduces their acoustic signature, which, in turn, makes them less likely to trigger acoustic mines.
The exact cause of the accident remains unclear, but local media reports described the freighter “passing over” the mine Greek Navy minehunter as the latter was leaving port.
Two people on the warship, carrying a total of 27 people, were slightly injured in the collision and were taken to hospital as a precaution according to Greek TV.
The cargo ship Maersk Launceston has been banned from sailing until the damage is repaired.
An article from gcaptain@
As built it was one of the last of the Hunt Class Minecountermeasure ships of the Royal Navy.
It is, an unusual testament to the design and construction and to the ship's crew that even after getting cut in half, it continued to float.
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