A whaleboat is a type of open boat that was used for catching whales, or a boat of similar design that retained the name when used for a different purpose. Some whaleboats were used from whaling ships. Other whaleboats would operate from the shore. Later whaleboats usually could operate under sail or oar - American whaling crews in particular obtained better results by making their first approach to a whale under sail, then quickly unstepping the mast and using oars thereafter. Most whaleboats have double-ended, clinker-built hulls of light construction. The hulls were narrow and with sharp ends to achieve the best possible speed for the length of waterline. Length was between 27 and 31 feet. Beam was just over a fifth of the length. Typically they were propelled by five oars when rowed, and stepped a single removable mast when under sail. A rudder was used when under sail and a steering oar when the boat was rowed. The latter provided the manoeuvrability needed when closing with a harpooned whale. Outside of whaling, whaleboats were well thought of for their seaworthiness and as a useful compromise between optimisation for sail or oar. They were therefore used as a type of ship's boat and for other utility purposes. Many of these derivative types varied from the whale-hunting types to some extent - for instance the Montagu whaler was a somewhat sturdier version with slightly fuller lines, but still retaining, for example, the five oars, clinker build, double ends and a reputation for seaworthiness. History The early history of whaleboats includes a c. 1335 image of Basque whalers working from a double-ended boat of this type. The similarity of the whaleboat to the Shetland sixern has been commented on - suggesting a Norse design heritage. An early 1600s description of whale-hunting from a whaleboat follows closely the methods of New Bedford whalers in the 1870s. There is little information on the actual boats used in the 1600s, but with a whaleship of that time carrying half a dozen or more whaleboats, they are likely to have been specialised types. Illustrations from 1711 and the 1720s show double-ended whaleboats with a crew of six, single-banked oars and a steering oar. The bollards (loggerheads in American terminology) on which the whale-rope would be controlled are clearly depicted. There is no evidence of sails being used in on whale-boats before 1825, but this soon