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thanks for the response
About the only options available are something like this:
a. Boom is moved by manpower.
b. Boom is moved by manpower pulling on lines.
c. Boom is moved by lines attached, power by winch.
The boom is mounted off a leg of a tripod mast. The "lifting" pulleys and lines are clear but how those large booms were swung out over the side is not. We see cranes on American dreadnoughts with machinery on a platform that both lifts and swings the boom. The brits had no such platform and the lifting winches seem to have been on the deck. Anyone know how the boom was swung?
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