sand jack

sand jack

noun Shipbuilding.
any of a number of containers of sand driven beneath a hull about to be launched as a temporary support and then drained of sand so as to let the hull down onto the launching cradle.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To sand jack
Dictionary.com, LLC. Copyright © 2012. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT