 She was involved in a collision on 3 January 2003 with a merchant vessel ANL "Indonesia" off Horsburgh Lighthouse (Pedra Branca) which resulted in the death of four RSN sailors.RSS "Courageous" was on patrol off the waters of Pedra Branca on 3 January 2003 and was travelling on the eastbound lane of the Traffic Separation Scheme when she made a turn against the flow of shipping at 2325 hrs local time.A collision with ANL "Indonesia" subsequently took place at 2335 hrs.