A series of long thin linear features can be seen on aerial photographs taken in 2007. These are situated on the mud bank north-west of St. Mary's Bay and are centred on TQ 7854 7979. Up to six lines can be identified which with one exception are between c.700m and c.800m in length. These are first seen on aerial photographs taken in 1955 and can also be seen on air photos taken in 1973. It is possible that these may be the remains of the Second World War boom that crossed the Thames from St. Marys Bay to Canvey Island (NMR 1534625). This site was mapped from aerial photographs as part of the English Heritage: Hoo Peninsula Landscape Project.(1-3)

Archive: MD003090 Hoo Peninsula Landscape Project: TQ 77 NE Material still held by Aerial Survey.

<1> RAF, 1955, RAF 58/1779 324-325 6-JUN-1955 (Photograph). SKE55993.

<2> Unknown, 1973, MAL/73047 001 5-SEP-1973 (Photograph). SKE55994.

<3> Next Perspectives, 2007, Next Perspectives PGA Tile Ref: TQ7879, TQ7880 21-APR-2007 (Photograph). SKE55995.