Heian Maru
Why dive here
With 195+ marine species recorded in the area - including barracuda, blacktip reef sharks, eagle rays, grey reef sharks and whitetip reef sharks - Heian Maru offers some of Chuuk (Truk) Lagoon's richest wreck diving. Water ranges 29-30°C, warmest August, October, November.
The Heian Maru is easily the biggest wreck in Chuuk, a really imposing presence at 150 meters long. We’ve always appreciated how accessible it is, sitting between 9 and 23 meters deep. You can spend a whole dive just exploring the cargo holds, where you’ll find stacks of torpedoes, massive periscopes, and even old china. Look for the engine room; it’s vast and feels like stepping back in time. We think this wreck is perfect for divers who want to get a real sense of scale and history without needing to go too deep.
Typical Heian Maru Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to Heian Maru
Dive shops near Heian Maru
View all dive centres in Chuuk (Truk) LagoonReviews for Heian Maru
Conditions
Ocean conditions, forecast and tides for Heian Maru
Heian Maru Ocean Conditions
Monthly averages for Heian Maru, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (7.41, 151.84) (2km away)
October Averages
Sea Temperature
30°C
86°F · Range: 29.3–31.4°C
Air Temperature
28°C
82°F
Wind Speed
6.4 m/s
12.4 knots
Atmospheric Pressure
1009.4 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
Plan & book
Ways to dive Chuuk (Truk) Lagoon, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in Chuuk (Truk) LagoonPlaces to stay
via Booking.comHotels and dive resorts near Chuuk (Truk) Lagoon.
Search stays in Chuuk (Truk) LagoonDive insurance
Most travel insurance excludes or limits scuba. Check what you need before you go.
Dive insurance explainedPartner links: we may earn a commission if you book, at no extra cost to you. How we make money
Where to Stay near Heian Maru
Prices from Booking.com. We may earn a commission at no extra cost to you.