

Best for intermediate divers, 20-36m, boat entry, mild current.
The Heian Maru is a large Japanese submarine tender resting in Chuuk Lagoon. This wreck lies at depths between 20 and 36 metres, with an average depth of 23 metres. Divers access the site by boat, where mild currents typically prevail. Visibility ranges from 10 to 30 metres, allowing for views of the hull structure. The site features penetration opportunities, though the overhead environment requires proper wreck training and a dive torch for dark interior passages. Due to the depth and wreck structure, this site is suited for intermediate divers with appropriate certification. Local operators provide guided tours, air fills, and equipment rental.
7.38271, 151.85568
Bring a good dive torch even for ambient-light penetration, as the interior passages get dark quickly regardless of surface visibility. All dives here are by boat, so book your guide and air fills through a local operator before you arrive at the lagoon.
Chuuk is remote; operators typically coordinate emergency response through Weno-based medical facilities.
Recorded at this site
Depth
20-36m
Visibility
10-30m
Skill Level
Intermediate
Entry
Boat
Boat required
Water Temp
29-30°C
Current
Mild
The wreck lies at depths between 20 and 36 metres, with an average depth of 23 metres.
No, this site is intended for intermediate divers due to the depth and the presence of overhead environments.
Access is by boat only. You must book your guide and air fills through a local operator before arriving at the lagoon.
No, this is a deep wreck dive requiring scuba equipment and wreck training.
Water temperatures are consistent throughout the year, ranging from 29C to 30C.
Diving at Heian Maru in Weno requires the following certifications: Open Water, Advanced. Always dive within your training limits.
Yes, equipment rental is available at or near Heian Maru in Weno. Contact local dive operators for specific gear availability and prices.
A rashguard or 2mm shorty is recommended for diving at Heian Maru in Weno. Water temperatures range from 29°C to 30°C.