Back ميمنة وميسرة (ملاحة) Arabic Göyərtə Azerbaijani Борд Bulgarian Борт BXR Backbord und Steuerbord German Babor y estribor Spanish Ababor eta istribor Basque پهلوهای کشتی Persian Tyyrpuuri ja paapuuri Finnish Bâbord et tribord French
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Port and starboard are nautical terms for watercraft and spacecraft, referring respectively to the left and right sides of the vessel, when aboard and facing the bow (front).
Vessels with bilateral symmetry have left and right halves which are mirror images of each other. One asymmetric feature is where access to a boat, ship, or aircraft is at the side; it is usually only on the port side (hence the name).