540 miles from Singapore
Anchor in 10-14 metres off the fringing reef on the northwest bay of Pulau Legundi. Around the headland, east, is the island village where limited supplies can be found. Anchor on sand at 5°47.983S, 105°17.635E and use the jetty, not the beach as it dries a long way out.
There are plenty of options around this group depending on the prevailing conditions. Just northeast is Pulau Umang Umang, with an all-tide beach with reasonable holding on sand in 4-8 metres, off the beach at 5°47.508S, 105°16.862E.
20 miles south is the famous Krakatoa group at 6°06.040S, 105°26.029E. It used to be possible to anchor off the Anak Krakatoa’s Ranger Station and hike up to the live volcano crater. However, since the catastrophic eruption in December 2018, the island is (at the time of writing) out of bounds because of the unpredictable and continuous volcanic activity.
Heading east, the last available shelter is either side of Pulau Sangiang, athwart the best line through the straits. On the west coast protection can be found two hundred metres off the beach in 8 metres at 5°57.560S, 105°50.881E. On the east coast shelter is best between the fringing reef off the research jetty in 5-7 metres at 5°57.832S, 105°51.990E. There is plenty of ferry traffic between Merak on Java and Lampung on Sumatra. Keep a good watch.