Diving atIrako (Philippines)
Approaching Irako, the sheer scale of this Japanese refrigeration supply ship is immediately striking. This former Imperial Japanese Navy vessel rests almost upright in deep waters, creating a dramatic silhouette visible as you descend. Its remarkable preservation, despite a direct hit to the bridge, hints at the extensive exploration opportunities awaiting experienced divers within Coron Bay. The structure itself, draped in marine growth, immediately captures attention.
Tonight's objective overview for Irako shows an air temperature of 28.1°C. The measured surface conditions include wave heights around 0.22m. This environmental data is logged for the close of the day.
Dive Site Coordinates
11.9682, 120.0403
Key Dive Site Facts
Dive Site Overview
Exploring Irako presents a distinct challenge and profound reward for wreck diving enthusiasts in the Philippines. This former Japanese refrigeration supply ship, recognized as a significant sunken vessel in Coron Bay, rests almost upright at depths reaching 45 m / 148 ft on a sandy bottom.
Unlike many other wrecks in the region, Irako Maru remains remarkably intact, save for a directly hit bridge section; its towering, near-vertical stance creates a dramatic silhouette on descent. Exploration often involves navigating an overhead environment; penetration into the wheelhouse, extensive cargo bays, and the engine room demands proficient buoyancy control and specialized training for safe access. Beyond internal exploration, Irako's vast external structure, richly adorned with hard and soft corals, actively attracts large schools of pelagic species and numerous reef fish, adding a vibrant biological layer to its historical significance.
General visibility typically ranges from 20 to 30 meters, providing clear views across the extensive hull and superstructures. Integrating significant historical interest with dynamic underwater exploration, the site offers a comprehensive wreck experience.
Best Time to Dive
Planning a dive at Irako is largely favorable year-round, though conditions are generally considered 'Excellent' from January to May and again from November to December. During these months, air temperatures typically hover between 27°C and 29°C / 81-84°F, with minimal rainfall, averaging around 2.0-6.6 mm. This period aligns with calmer seas and optimal surface conditions for boat travel to the site, which is approximately 30 minutes from Coron. The 'Good' season, extending from June to October, experiences increased rainfall, ranging from 10.0-17.5 mm, and air temperatures remain consistently warm, between 27°C and 28°C / 81-82°F. Even with higher precipitation, dive conditions remain quite good, making the Irako accessible for exploration throughout most of the year, adapting to minor seasonal shifts.
Climate Historical Averages
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
The depth profile at Irako dictates a dive suited for experienced and advanced wreck divers. This deep wreck descends to approximately 45 meters, with its main deck around 34 meters, often requiring careful gas management and decompression planning. Water temperatures are consistently warm, generally ranging from 26-29°C / 79-84°F, though exact figures are not consistently reported. Visibility is typically strong, often 20-30 meters, allowing for good appreciation of the wreck’s massive structure and its surroundings. While current is often limited, occasional strong currents can be encountered, especially around certain sections of the wreck, adding another layer of challenge. The site is open to the sea, reached by boat, and primarily consists of the sandy bottom around the wreck itself.
Dive Difficulty & Safety Guidelines
Diving Irako demands a high level of proficiency and adherence to strict safety protocols. Due to its significant depth and the availability of penetration opportunities, this site is exclusively suitable for experienced wreck divers. Key hazards include the overhead environment within the wreck, which can be dark and silty, posing a risk of disorientation if proper lines and protocols aren't followed. Local divemasters describe the wreck as 'Deep, Dark, and Dangerous' (DDD), underscoring the necessity for excellent buoyancy control, especially during internal exploration where passages can be narrow. For those considering penetration into areas like the engine room, advanced wreck training, specialized equipment, and conservative dive planning are strongly recommended. Using Nitrox is also advisable to extend bottom time and manage decompression.
Recommended Equipment
No verified equipment items yet.
Verified equipment recommendations for this dive site are being reviewed and may be added as additional source checks are completed.
Recommended Dive Suit
Water temperatures at Irako are currently estimated to be around 30°C (85°F), shaping the overall diving conditions for today. Surface air temperatures are resting at 28°C (83°F).
Dive skin or rash guard is generally considered suitable for water temperatures like this. A hood or vest is suggested for sensitive divers due to surface winds.
Conditions in the coming days are expected to stay within a similar temperature range.
Conditions last reviewed: 18:00 using the latest environmental data.
Dive Logistics & Preparation
Hyperbaric Chamber
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Entry Requirements
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Currency
PHP
Nearest Airports
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Marine Life at Irako
The Irako’s submerged landscape acts as a substantial artificial reef, attracting a diverse range of marine inhabitants. Hard and soft corals have extensively colonized the wreck's superstructures, creating vibrant patches of color and texture. Out on the exterior, large schools of jacks frequently form impressive 'tornado' formations around the mast, while barracudas and trevallies patrol the decks. Divers often spot hunting tuna and groupers in the vicinity, alongside green sea turtles gracefully navigating the wreckage. Stingrays are also occasionally seen near the bow, adding to the dynamic underwater ecosystem around this historical site.
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Frequently Asked Questions
Who is Irako Maru suitable for?
Primarily suitable for experienced wreck divers and those with advanced certifications, Irako's significant depth and penetration options require proficient buoyancy, navigation skills, and specialized training.
What is the maximum depth of the Irako wreck?
The wreck itself lies at a maximum depth of 45 m / 148 ft on a sandy bottom. Its main deck is accessible at roughly 34 meters. Divers should plan for a deep dive profile and manage their gas accordingly.
Is wreck penetration possible at Irako?
Yes, penetration opportunities exist in the wheelhouse, cargo bays, and engine room. These areas can be dark and silty, demanding appropriate training, specialized equipment, and excellent buoyancy control for safe exploration.
How clear is the visibility at Irako?
Visibility at Irako is generally good, often ranging from 20 to 30 meters. It typically provides clear views of the extensive wreck structure and surrounding marine life, contributing to an immersive experience.
What marine life can be seen at Irako?
Divers commonly encounter large schools of jacks, barracudas, and trevallies around the wreck. Green sea turtles, hunting tuna, groupers, and occasional stingrays are also observed, alongside diverse corals on the wreck's surfaces.
How long does it take to get to Irako from Coron?
Accessible by boat, Irako typically requires a 30-minute ride from Coron dive resorts. Often part of a multi-wreck dive itinerary in Coron Bay, planning transport is straightforward.
Are currents a concern at Irako?
While currents are generally described as limited, divers should be prepared for the possibility of occasional strong currents, particularly around specific sections of the wreck. Proper current diving techniques are advisable.
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