Copper Punt. Light raft on two hollow wooden floats. Used in R.N. when cleaning or painting boot top or lower area of ship's side. Was used, originally, for cleaning copper sheathing when vessel was careened.
Coral.Carbonate of lime that is formed by skeletons of polyps or zoophytes.
Coracle. Boat comprised of wickerwork base covered with skins or oiled fabric. Dates from very early times and still to be seen in Wales and Ireland.
Coral Reef. Reef that largely consists of coral. Most important runs parallel to N.E. Coast of Australia, being about 1000 miles long and having a 350-mile length with no gap. Also found in Solomon Islands, New Hebrides and other places.