During both world wars there was a defensive boom spanning the River Clyde between Gourock on the east shores and Dunoon on the west shores of the river. The boom was overseen by artillery batteries on both sides.
Clock Battery was on the East side of the river and overlooked the boom. On the other side and further to the south we had Toward battery that overlooked an inspection area for ships wishing to travel upriver.
The Clyde boom played a vital role in protecting industry, shipbuilding and navy operations on the Clyde
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