Corveta Ipiranga (V17)

The Brazilian Navy corvette Ipiranga (V17) struck rocks and sank off Noronha in 1983, settling upright and startlingly intact on a sand plain around 60 m down. In the archipelago's clear water she appears whole from far above: guns trained, masts standing, companionways open, a warship paused rather than lost. The crew abandoned ship successfully, so she is dived without the weight of a grave, but with every demand of depth - this is a staged-decompression dive for trained technical divers with proper gas, run by operators equipped for it. Reef sharks and barracuda patrol the superstructure, and the light at 60 m in 30 m visibility is something recreational profiles simply never show.

その瞬間のために: An intact upright warship in exceptional visibility, one of South America's benchmark technical dives

地形: Sand and rock plain around an upright warship

危険生物・リスク: Depth beyond recreational limits, mandatory decompression, current on the ascent line.

保全: Within the marine national park; nothing may be removed from the wreck.

ナイトロックス: ここでは効果的です——このエリアのプロファイルは、ナイトロックスが無減圧潜水時間を有意に延ばせる水深帯にあります（適切なトレーニングを受けていることが前提です）。