Port and starboard vessel's starboard side by green and its port side by red. Aircraft are lit in the same way. Port and starboard Port and starboard are nautical and aeronautical terms of orientation that deal unambiguously with the structure of vessels and aircraft. Their structures are largely bilaterally symmetrical, meaning they have mirror-image left and right halves if divided long-ways down the middle. One asymmetric feature is that on aircraft and ships where access is at the side, this access is usually only provided on the port side. To understand which is which, when a person is facing the bow on a
Voyager-class cruise ship the first rock climbing wall (mounted on the funnel) and ice-skating rink at sea. "Voyager"-class ships also feature the Royal Promenade: a marble floored street stretching just over 3/4 the length of the ship featuring shops and light dining venues. The Royal Promenade extends through the upper decks of the ships, giving most upper level cabins a window, either to the port or starboard side or inwards to the promenade. This design was first used in the cruiseferry in 1990 and its twin ship in 1991. All cabins on "Voyager"-class ships feature an en-suite bathrooms and an innovative interactive television