RYPA
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The RYPA (Roll, Yaw, Pitch, Alteration of Course Instructional Platform) was a British instruction and practice platform that could support Rangefinder and various Gunnery Director equipment. Similar to a cockpit simulator, it could rotate the equipment placed on it about various rotational axes to simulate the motion of a ship under way.
Mark I Model
- RYPA Mark I
Mark II Model

RYPA Mark II bearing British Lightweight Director Firing System

RYPA Mark II bearing a Barr and Stroud Rangefinder
See Also
Footnotes