The Saunders Roe A.37 Shrimp was a 1930s British two-seat four-engined experimental flying boat built by Saunders-Roe Limited ("Saro") at Cowes.

The Shrimp was designed by H Knowler in 1939 as a half-size research aircraft as part of a development programme for the Saunders-Roe S.38 a four-engined patrol flying-boat to Specification R.5/39 – a replacement for the Short Sunderland.

The Ministry of Aircraft Production acquired it in 1944 with the serial TK580 for tests to help the design of the Short Shetland a successor to the R.5/39 project being developed jointly by Saro and Short Brothers.

For this its twin rudder tail was swapped for a single fin and the hull was modified to represent that of the Shetland.

Data from Warplanes of the Second World War, Volume 5: Flying Boats[3]General characteristics Performance