Longboat

A longboat is a type of ship's boat that was in use from circa 1500 or before. Though the Royal Navy replaced longboats with launches from 1780, examples can be found in merchant ships after that date. The longboat was usually the largest boat carried. In the early period of use, a ship's longboat was often so large that it could not be carried on board, and was instead towed. For instance, a 1618 survey of Royal Navy ship's boats listed a 52 ft longboat used by the First Rate Prince, a ship whose length of keel was 115 ft. This could lead to the longboat being lost in adverse weather. By the middle of the 17th century, it became increasingly more common to carry the longboat on board, though not universally. In 1697 some British ships chasing a French squadron cut adrift the longboats they were towing in an attempt to increase their speed and engage with the enemy.

The longboat usually had the largest passenger carrying capacity out of a ship's boats. Longboats were used by both warships and merchant ships.

A longboat was fitted so that it could be propelled either by oars or by sail. The oars were double-banked - with two oarsmen on each thwart, each using an oar on their own side. The usual sailing rig was single masted, with a gaff mainsail and two headsails - the jib was set on a bowsprit and the staysail to the stemhead. This is a cutter rig, not to be confused with the ship's boat termed a cutter.

A ship would usually carry the largest longboat it could store on deck. Consequently their size varied depending on the size of the parent ship. However, too large a boat could interfere with the handling of a ship or her guns, and the weight of a longboat could put excessive strain on the masts and yards which were used for hoisting the boat in and out of the water. Smaller ships might carry a yawl instead of a longboat. The sizes of longboats in the Royal Navy in circa 1705 were recorded in a shipwright's notebook as follows.

The Royal Navy started to replace longboats with launches from November 1780. This instruction was implemented for all ships of 20 guns and above being built or coming in for repair. There are earlier instances of individual warships requesting a launch instead of a longboat, with several examples in the 1740s. The advantages of a launch were ease of use in carrying water and stores and a greater number of passengers being accommodated. However a longboat was considered to be more seaworthy. Longboats could be found in merchant service after the Royal Navy had ceased to use them.