Flying boat from Jur Kingma's collection

The Short Singapore was a British multi-engined biplane flying boat built after World War I. The Singapore name first appeared in the mid-1920s, on a one-off, twin-engined, record-breaking aircraft. The design was developed into two four-engined versions; the prototype Singapore II and production Singapore III. The latter became the Royal Air Force's main long-range maritime patrol flying boat of the 1930s and saw service against the Japanese with the Royal New Zealand Air Force during World War II.

source:
WIKIPEDIA