SARO A-37

After developing the S.38 four-engined patrol flying boat to specification R.5/39, SARO produced a half-scale replica as the SARO A.37, also known as the Shrimp, as a private endeavour. The R.5/39 plan was cancelled, but the SARO A.37 was completed in time for its maiden flight in October 1939.

The A-37  was powered by four 63kW Pobjoy Niagara III engines and subsequently modified to have a single fin and rudder, as well as other elements reminiscent of the Shetland flying boat produced jointly by Shorts and SARO. In this form, it was given the serial number TK580 and was tested from early 1944 until after the war ended.