The left of a ship is port and the right is starboard. Aft is the rear of a ship and the bow is the front of a ship.
ABAFT
beam
Retroperitoneal is the medical term meaning behind the peritoneum. The kidneys and ureters are retroperitoneal.
On the ground; stranded; -- a nautical term applied to a ship when its bottom lodges on the ground.
The nasopharynx is the space behind the nose.
An abscess behind the tonsils is a retrotonsillar abscess.
Retropharyngeal is the medical term meaning behind the pharynx.
a boating term
No such specific term and I guess you may call it retro renal
1 nautical mile = 0.33 leagues.
The nautical term for stopping a sailboat by pointing into the wind is "in irons."
The nautical term refers to ships and how they are used, such as a cruise ship would be classified as commercial rather than freighter.