the lowermost spar of a compound mast, stepped in the hull of a vessel and carrying a topmast and any other upper spars.
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How to use lower mast in a sentence
The lower mast had already been parbuckled on to the deck, where sheer-legs had been erected by another party.A Roving Commission | G. A. Henty
Unknown to us, this had happened to a strong, new manilla rope by which Murphy was being hauled to the top of the lower-mast.The Home of the Blizzard | Douglas Mawson
Topmast: The next mast to the lower mast; in ships, the topmast is succeeded by top-gallant mast and royal mast.The Sportswoman's Library, v. 2 | Various
They were usually of fir; and the head of the lower mast, which is at present called the top, was in the shape of a drinking cup.How Britannia Came to Rule the Waves | W.H.G. Kingston
When the lower mast, the topmasts, and the royals were sawn and split, the principal pieces of the raft were ready.In Search of the Castaways | Jules Verne