The Mission to Seafarers Singapore ship visitor Alexander Choy climbs the steep gangway of a large container ship at bustling Pasir Panjang port. It is the fifth gangway he has climbed on this hot, humid day, with more ahead.

Any fatigue dissipates as he is met by the eager faces of the vessel’s crew at the gangway’s end. For many, this brief stopover in the Asian city-state offers less than 10 hours ashore.