A rescue lifeboat is one of the boat rescue crafts used by a rescue crew to save a ship in distress or its passengers. It can be driven in several ways, including hand pulling, powering with a sail or an engine. These crafts can be inflatable, rigid and rigid-inflatable combined.
Three types of lifeboats exist, including those used in inland waters (rivers and lakes), in inshore waters (near shores), and in offshore waters (deeper and more distant waters). Swift water rescue boats have all special characteristics that are necessary in order to rescue, search and save people in waterways or when dangerous situations at sea occur.
In the USA and Canada, motor lifeboats also known as MLB are usually used as water rescue boats based near shore and operated by coast guard staff that works full-time. However, this staff doesn’t work in patrol mode; its operational mode is rather by alert, so we can compare its work with the work of fire fighters. Some Canadian lifeboats have crews combined of both regular staff (engineer and operator) and trained volunteers (other members of a crew).
Lifeboats were exposed to some modifications. For instance, in 1890 an engine was added, since then these boats had more power to leave or enter swell areas in the surf. It became possible to launch lifeboats from shore regardless of the weather and carry out rescue works. The older type of boats could be used only with oars and sails, which made it more difficult to move in a sea because it required fair weather or more human force. Now, modern river rescue boats are equipped with radar, a radio and other devices that help them to locate a ship in distress in order to bring supplies or provide medical help.
PVC inflatable boats are very popular currently. You can usually see them in different water bodies and they are suitable for the solution of various tasks, including fishing and spending leisure time, moving around in shallow water, fishery protection, reconnaissance and rescue operations, etc.
Initially, inflatable rescue boats were considered as the only floating structures which are designed for usage during ditching. However, in the following, after inflatable emergency escape rafts had been developed, they were started to be used. An inflatable lifeboat consists of two air ducts installed one over another that have the same diameter and suspended floor area between them. There are also inflatable sections on each side and in the center that serve in order to provide an additional support. The peculiarity of such a double construction is conditioned upon the fact that it is not necessary to turn a lifeboat upside down after its inflation because both sides of a lifeboat can be effectively used as the top side.
All rescue boats are equipped with a tiedown device that turns out to be a platform with a tucked under collar that serves as a step. To make coming on a board more comfortable, there are special handles on a lifeboat’s edges. In order to save people who may drown in the water, there are a life rope and a rescue line with a flotation ring of 10 cm size near the tiedown device. In order to inflate a rescue dib boats, a special handle is used. When you pull the handle, both air ducts will be filled with carbon dioxide.