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2. Ladder - Wikipedia

   en.wikipedia.org/wiki/Ladder

   Step ladders have flat steps and a hinged back. Swim ladder, a ladder used by swimmers to get out of the water, often on boats. Telescoping ladder, commonly used to refer to a hybrid between a step ladder and an extension ladder with 360-degree hinges; has three parts and can be taken apart to form two step ladders; e.g. Little Giant.

3. Jacob's ladder (nautical) - Wikipedia

   en.wikipedia.org/wiki/Jacob's_ladder_(nautical)

   A pilot ladder has specific regulations on step size, spacing and the use of spreaders. It is the use of spreaders (long treads that extend well past the vertical ropes) in a pilot ladder that distinguishes it from a Jacob's ladder. When not being used, the ladder is stowed away, usually rolled up, rather than left hanging.

4. Telescoping (mechanics) - Wikipedia

   en.wikipedia.org/wiki/Telescoping_(mechanics)

   Telescoping in mechanics describes the movement of one part sliding out from another, lengthening an object (such as a telescope or the lift arm of an aerial work platform) from its rest state. [1] In modern equipment this can be achieved by a hydraulics , but pulleys are generally used for simpler designs such as extendable ladders and amateur ...

5. Float (nautical) - Wikipedia

   en.wikipedia.org/wiki/Float_(nautical)

   A pontoon boat is a flattish boat that relies on nautical floats for buoyancy. Common boat designs are a catamaran with two pontoons, or a trimaran with three. [2] In many parts of the world, pontoon boats are used as small vehicle ferries to cross rivers and lakes. [3] An anchored raft-like platform used for diving, often referred to as a pontoon

6. Dive boat - Wikipedia

   en.wikipedia.org/wiki/Dive_boat

   Ladder entry may be used where there is a ladder into the water. Ladders may be fixed, folding or portable, and may be designed for use with swimfins. Lifting platform entry: The diver/s stand on a platform fixed to the boat by the lifting mechanism, and are lowered a short distance into the water. [9]

7. List of United States Navy amphibious warfare ships - Wikipedia

   en.wikipedia.org/wiki/List_of_United_States_Navy...

   The Tarawa-class LHA was the first to combine the features of the well deck of the Landing Ship Dock (LSD) or Landing Platform Dock (LPD) and the full flight deck of the Landing Platform Helicopter (LPH) into one ship. Though not designed to carry Landing Craft Air Cushion (LCAC)s, they could accommodate one in their well decks. [3]