In 2015, RSS Archer participated in the first-ever anti-submarine warfare exercise in Exercise Singsiam's history in the Andaman Sea alongside counterparts from the Royal Thai Navy. During the exercise, RSS Archer trained with naval helicopters jointly deployed from HTMS Naresuan, HTMS Saiburi, RSS Intrepid as well as a Dornier 228 Marine Patrol Aircraft(MPA).https://thediplomat.com/2015/11/singapore-deploys-submarine-to-naval-exercise-with-thailand/
