The two Albatroz class patrol boats Oecussi and Atauro are each armed with a 20 mm Oerlikon cannon and two 12.7 mm machine guns and are based at Hera Harbour a few kilometres east of Dili. They were built in the early 1970s and were in the process of being decommissioned from the Portuguese Navy at the time they were offered to East Timor. The patrol boats' high operating costs are a significant constraint on the Naval Component.