Lifeboat

A lifeboat is a rigid or inflatable boat planned to save the lives of people in trouble at sea. The term has somewhat special meanings in British and American usage. The British usage emphasizes particular vessels kept in harbor or near a harbor, often manned by volunteers, considered to quickly reach a ship in trouble. The term "lifeboat" in American usage normally refers to rigid or inflatable vessels accepted by larger ships to allow passengers and crew to escape in an emergency.
The first boat expert as a lifeboat was tested on the River Tyne on January 29, 1790. William would have and Lionel Lufkin both claim to be the inventor of the first lifeboat. One example of an early lifeboat was the Land guard Fort Lifeboat of 1821, considered by Richard Hall Gower.
In U.S. waters, rescue-at-sea is part of the duty of the United States Coast Guard, which employs its multipurpose ships and aircraft in this role. The Coast Guard is also responsible for making sure that the proper type and number of lifeboats (American usage) is available and kept in good repair on any large ship. "Lifeboat drills" are a division of a cruise experience.

Hovercraft

A hovercraft, or air-cushion vehicle (ACV), is a vehicle or craft that can be hold up by a cushion of air dispossessed downwards against a surface close below it, and can in principle travel over any relatively smooth surface, such as gently sloping land, water, or marshland, while having no substantial contact with it.
Hovercraft has one or more parts of engines (some craft, such as the SR-N6, have one engine with a drive split through a gearbox). One engine drives the fan (the impeller) which is in charge for exciting the vehicle by forcing air under the craft. The air therefore must exit throughout the "skirt", lifting the craft above the area which the craft resides. One or more additional engines are used to offer thrust in order to propel the craft in the favorite direction. Some hovercraft utilized ducting to allow one engine to perform both tasks by directing some of the air to the skirt, the rest of the air passing out of the back to push the craft forward.

Cigarette boat

The cigarette boat or go-fast boat is a high performance boat of a feature design. Originally designed for his offshore racing team by Donald Aronow, the fast, powerful boats became infamous as the drug smuggling boat of choice in many parts of the world in the 1990s and first years of the 21st century.
In harmony with their pure racing heritage, the accommodations on these boats are minimal, and they are built to hold 5 or more passengers. While most do have some cabin under the foredeck, it is low and much smaller than a characteristic motor yacht of similar size. Apart from the racing market, most buyers of these boats purchase them for the mystique; the mixture of the racing and smuggling connections, plus the immense power and high top speeds make these boats popular as ostentatious displays of wealth.
These boats are hard to detect by radar except on flat calm seas or at close range. The United States Coast Guard and the DEA establish them to be stealthy, fast, seaworthy, and very complicated to intercept using conventional craft. Because of this, Coast Guards contain developed their own high-speed craft and also use helicopters. The helicopters are prepared with Anti-materiel rifles which can be used to disable the motors of the go-fast boat. The Coast Guard go-fast boat is a rigid hulled inflatable boat RHIB ready with radar and powerful engines. The RHIB is armed with quite a few types of non-lethal weapons and M240 GPMG.