A whaler or whaling ship is a specialized vessel, designed or adapted for whaling: the catching or processing of whales. Terminology The term whaler is mostly historic. A handful of nations continue with industrial whaling, and one, Japan, still dedicates a single factory ship for the industry. The vessels used by aboriginal whaling communities are much smaller and are used for various purposes over the course of the year. The whale catcher was developed during the age of steam, and then driven by diesel engines throughout much of the twentieth century. It was designed with a harpoon gun mounted at its bow and was fast enough to chase and catch rorquals such as the fin whale. At first, whale catchers either brought the whales they killed to a whaling station, a settlement ashore where the carcasses could be processed, or to its factory ship anchored in a sheltered bay or inlet. With the later development of the slipway at the ship's stern, whale catchers were able to transfer their catch to factory ships operating in the open sea. Previous to that was the whaleship of the 16th to early 20th centuries, driven first by sail and then by steam. The most famous example is the fictional Pequod in Moby-Dick, based on the whaling industry in Nantucket. Whaleships carried multiple whaleboats, open rowing boats used to chase and harpoon the whale. The whaleship would keep watch from the crowsnest, so it could sail to the signal and lash the dead whale alongside. Then the work of flensing (butchering) began, to separate the whale into its valuable components. The blubber was rendered into whale oil using two or three try-pots set in a brick furnace called the tryworks. Spermaceti was especially valuable, and as sperm whaling voyages were several years long, the whaling ships were equipped for all eventualities. There have also been vessels which combined chasing and processing, such as the bottlenose whalers of the late 19th and early 20th century, and catcher/factory ships of the modern era. In wartime The crews of whaling vessels fought small skirmishes for the control of the Spitsbergen whale fishery between 1613 and 1638. The Dutch were the first Europeans to visit Svalbard, and this gave a head start to whaling in the Dutch Republic. In the late 18th and early 19th century, the owners of whalers frequently armed their vessels with cannons to enable