▁lock ▁between ▁the ▁lock ▁island ▁and ▁Ber k shire ▁bank . ▁ ▁History ▁There ▁is ▁reference ▁to ▁the ▁we ir ▁and ▁flash ▁lock ▁at ▁this ▁location ▁in ▁the ▁ 1 6 th ▁century ▁when ▁it ▁was ▁known ▁as ▁" C ot ter ell ' s ", ▁a ▁name ▁which ▁pers isted ▁after ▁the ▁p ound ▁lock ▁was ▁built . ▁It ▁was ▁the ▁second ▁down stream ▁of ▁the ▁eight ▁lo cks ▁built ▁after ▁the ▁navigation ▁act ▁of ▁ 1 7 7 0 , ▁and ▁was ▁completed ▁in ▁fir ▁wood ▁in ▁ 1 7 7 3 . ▁At ▁this ▁time ▁the ▁to w path ▁up stream ▁was ▁transferred ▁from ▁the ▁Ber k shire ▁to ▁the ▁Oxford shire ▁bank . ▁ ▁The ▁lock ▁had ▁to ▁be ▁re built ▁of ▁o ak ▁in ▁ 1 7 8 7 ▁as ▁the ▁fir ▁had ▁decay ed . ▁There ▁were ▁two ▁mill s ▁on ▁the ▁island ▁at ▁this ▁time . ▁The ▁lock ▁was ▁re built ▁again ▁in ▁ 1 8 7 4 ▁and ▁the ▁we ir ▁in ▁ 1 8 8 5 . ▁The ▁lock ▁island ▁was ▁purchased ▁by ▁the ▁City ▁of ▁London ▁Corporation ▁for ▁camp ing ▁in ▁ 1 8 9 1 , ▁and ▁in ▁ 1 9 0 7 ▁the ▁ru ined ▁mill s ▁were ▁demol ished . ▁Sh ip la ke ▁Lock ▁was ▁the ▁first ▁lock ▁on ▁the ▁Th ames ▁to ▁have ▁hyd ra ul ic ▁operation ▁installed ▁in ▁ 1 9 6 1 . ▁During ▁the ▁winter ▁of ▁ 2 0 0 9 / 2 0