The Soemba was a Dutch sloop (classed as a Kanonneerbooten) of 1457 tons displacement launched in 1925. The Soemba was powered by four Yarrow oil-fired boilers providing a top speed of 15 knots and carried a complement of 132. She was armed with three 5.9 inch guns; one 3 inch anti-aircraft gun; four 12.7 mm anti-aircraft guns; four machine-guns an...