Unkai 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 - Unkai Maru offers some of Chuuk (Truk) Lagoon's richest wreck diving. Water ranges 29-30°C, warmest August, October, November.
The Unkai Maru, she's a different beast from some of the other deep boys in Chuuk. Sitting in shallower water, she’s a perfect warm-up, or a brilliant second dive, offering heaps of penetration for those qualified. We love dropping into her holds, finding stacks of ceramic tiles, rows of sake bottles, and even some small trucks and jeeps still lashed down. The light plays beautifully through the openings, illuminating the ghostly cargo, and honestly, the sheer volume of stuff still onboard is genuinely striking. Outside, the deck guns are crusted with corals, home to schools of snapper and barracuda. Look closely, and you’ll spot nudibranchs tucked into crevices. The shallower depth means longer bottom times, giving you plenty of opportunity to explore the bridge or the engine room – definitely don’t skip the engine room, it’s remarkably intact. It’s not just a history lesson; it’s a living reef too. Our pick for a less demanding, but still utterly compelling, Chuuk experience.
Typical Unkai Maru Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Depth of 25m - Advanced Open Water certification recommended.
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 Unkai Maru
Dive shops near Unkai Maru
View all dive centres in Chuuk (Truk) LagoonReviews for Unkai Maru
Conditions
Ocean conditions, forecast and tides for Unkai Maru
Unkai Maru Ocean Conditions
Monthly averages for Unkai 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 Unkai Maru
Prices from Booking.com. We may earn a commission at no extra cost to you.
