HMS Satyr was an S-class submarine of the Royal Navy, and part of the third group built of that class.

[2] For surface running, the boats were powered by two 950-brake-horsepower (708 kW) diesel engines, each driving one propeller shaft.

[4] It is uncertain if Satyr was completed with a 20-millimetre (0.8 in) Oerlikon light AA gun or had one added later.

[5] Satyr spent much of her wartime career serving in home waters, where she sank the Norwegian merchant Nordnorge, and the German submarine U-987.

[6] During 1944–1945 Satyr was disarmed, streamlined and given more powerful batteries to serve as a high speed target submarine.