The seaman's Vade-Mecum, and defensive war by sea : Containing the proportions of rigging, masts and yards, weight of anchors, sizes and weight of cables and cordage, list of the navy. The exercise of the small arms, bayonet, granadoes and great-guns, duty of officers, &c. Also shewing how to prepare a merchant-ship for a close fight, by disposing their bulk-heads, leaves, coamings, lookholes, &c. Chasing; the advantages to be taken by the chase considered, under all positions in respect to wind and tide. Defensive-fighting; shewing how merchant ships are to act, whether single or in fleets, when canonaded or boarded by the enemy. Naval fortification; the advantages of mooring considered, in respect to wind and tide; and how to lay booms in streight or crooked rivers, &c. an essay on naval book-keeping; as well in respect to the purser, as to the Captain's clerk and steward. The method of forming signals for the regulation of merchant-ships failing in company, under the direction of a Commodore in time of war; with many other particulars, relating to the navy and merchant service. By William Mountaine, teacher of the mathematics, and F.R.S.