Sea lock on Chelmer and Blackwater Navigation (EHER 38303)

A late 18th century canal lock at the seaward end of the Chelmer and Blackwater Navigation (EHER 15085). It is built from engineering brickwork with substantial stone edge copings. The lock gates are 20th century replacements and the basin has return flanks at right-angles on the landward side.

September 1971. Grade II listed. A late 18th century canal lock at the seaward end of the Chelmer and Blackwater Navigation (EHER 15085). It is built from engineering brickwork with substantial stone edge copings. The lock gates are 20th century replacements and the basin has return flanks at right-angles on the landward side. <1> See photos <2>. 1998-2001. Chelmer and Blackwater Navigation survey. A deep brick chamber with stone copings. The upper balanced beam wood mitre gates have gate paddles ('Maldon Iron Works Co Ltd 1921') and steel reinforcement. The lock has been extended seawards by about 12m, leaving gate hinge rebate grooves and iron fixings of the former lower gates visible. The present lower mitre gates are reinforced on the seaward side by a sliding steel caisson shutter which can be moved southwards on runners into a slot trench. On the south bank of the sea lock is a 4ft high steel winch (by JRM Fitch Manningtree). <3> See photo <4>. See also photos <5> <12>.