The crew of a Swiss-owned supramax have detained three robbers who boarded their bulker in the Singapore Strait, TradeWinds has learnt.

The attackers, armed with a crowbar and pipes, boarded Shipping Asset Management’s 57,200-dwt SAM Jaguar (built 2013) early on Monday.

However, the quick-witted crew locked them inside the engine-room workshop, while the ship’s master reported the incident to Batam's Vessel Traffic Information System.