Nab tower, Portsmouth Harbour

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    Lawrie Phillips

    Can anyone provide details of the history of The Nab tower off Portsmouth Harbour? I am told that it was a concrete structure built during the First World War and intended as an anchor point for the Dover Strait barrage and that it sank under tow. I need a specific date for the sinking.

    P.S. B

    The Trinity House website,,
    has the answer.

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