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Location: Church Bay, Anglesey, Wales.
Location: Port of Dover, England.
Location: Fleetwood Channel, England.
Location: South of the Isles of Scilly.
Location: Port of Calais, France.
Location: Off Stornoway, Scotland.
Location: Pinto Wharf, Valetta Harbour, Malta.
Location: Dartmouth, River Dart, England.
Location: Near the Little Minch off west coast Scotland.
Location: Porthmeor Beach, St Ives Bay, Cornwall, England.
Location: 16 miles south of Beachy Head, England.
Location: Near the Treshnish Isles, west of the Isle of Mull, Scotland.
Location: 24 nm north of the Dominican Republic.
Location: Off Ramsgate, England.
Location: Off Eilean Trodday near Skye, Scotland.
Location: Pentland Firth, Scotland.
Location: Approaches to Plymouth, England.
Location: Devenick Oil Field, 126 nautical miles north-north-east of Aberdeen, Scotland.
Location: Dadanwei Shuidao channel, 15 miles south of Hong Kong.
Location: Drogden Channel, Denmark.
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