120 NICHOLLS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE will give an approximate idea as to both size and length of chain provided. Length of steamer Length of cable Size of cable m feet. in fathoms in inches 290 240 1J 375 270 2^ 480 300 21 Larger steamers have longer and heavier cables. The Mauretania has 330 fathoms, the size being 3f inches. The cables of sailing ships are heavier, and they carry 30 fathoms more than steamers of corresponding size. Lloyd's Rules regulate the sizes of all anchors and cables for both steam and sailing vessels according to their equipment number. This is their longitudinal scantling number with an allowance for super- structures added to it. The corresponding approximate lengths quoted above have been given here, as they are more easily noted and understood. The length from shackle to shackle in the cable is- 15 fathoms in merchant ships, 12 J fathoms in warships; the shackles being placed in the cable with the bow or round end of the shackle forward so that' it goes out first. SHACKLES. The shackles which join the lengths of cable together differ slightly from those used for shackling it to the anchor. In the joining shackles Anchor Shackle. Joining Shackle. Fig, 9.—Swivel Link.