Seaplane Experimental Station
The Seaplane Experimental Station, formerly RNAS Felixstowe, was a British Royal Air Force aircraft design unit during the early part of the 20th century. == Creation == During June 1912, surveys began for a suitable site for a base for Naval hydro-aeroplanes, with at first Shotley or Mistley on the River Stour.
Source: Wikipedia — Seaplane Experimental Station (CC BY-SA 4.0)