Longboat. See Boats.
Lumber. Sawn timber.
Masts: The masts of a full-rigged three-masted ship are the following: Fore-mast, topmast, topgallant-mast, royal mast. Main-mast, topmast, topgallant-mast, royal mast. Mizzen-mast, topmast, topgallant-mast, royal mast.
Monsoon. See Winds.
Mortar. A kind of gun with a very short bore. It throws its projectile at a great elevation.
Mortar, Cohorn (see chapter 7). Cohorn was a famous Dutch engineer and artillerist in the service of William III.
Nailed up. Spiked. To spike a gun is to render it useless for the time by inserting into the vent a steel pin with side springs, which when inserted open outwards to the shape of an arrowhead so that it cannot be released.
Offing: 1. The most distant part of the sea visible from the shore. 2. A still greater distance, sufficient to avoid the dangers of shipwreck, as "a good offing."
Overreach. To pass.
Parallel, i.e. of latitude or longitude as the case may be.