Philippines

Dive Site: Tangat Wreck

12–30 mIntermediate Wreck
© EsriSource: Esri, Maxar, Earthstar, GIS Community · Labels © Esri, HERE, Garmin, FAO, NOAA, USGS

Which liveaboards dive Tangat Wreck?

About Tangat Wreck

Tangat Wreck, also known as Kogyo Maru, is a prominent Japanese shipwreck nestled in Coron Bay, Palawan, Philippines. This region is internationally recognized for its exceptional wreck diving, stemming from a 1944 American air raid that sank a fleet of Japanese warships. The wreck lies on its side in relatively shallow waters, making it accessible for a broader range of divers. The Kogyu Maru measures around 140 meters in length and offers a fascinating journey into wartime history. Its cargo holds are easily penetrable, making it an excellent site for those new to wreck diving or looking to hone their skills in a secure environment. The wreck's exterior is extensively covered in vibrant corals and sponges, hosting diverse marine life. Beneath the surface, the Tangat Wreck teems with a variety of marine species. Healthy schools of fish animate the wreck, while crocodile fish, scorpionfish, and nudibranchs can be found nestled within its structures. Groupers, barracudas, and fusiliers often patrol its perimeter. The interior penetration routes reveal remnants of the ship's cargo, including construction materials. Visibility at the site typically ranges from 12 to 25 meters, providing clear views for photographers and explorers alike. While generally a more straightforward wreck dive, local conditions, including currents and tides, should always be factored into dive planning. The dive experience at Tangat Wreck is generally considered suitable for intermediate divers. Its shallower depth compared to other Coron wrecks makes it a great introduction to wreck penetration, though more advanced divers will still find plenty to explore. Entrance into the cargo holds is relatively easy, offering a safe environment to experience internal wreck exploration. The relatively calm conditions and good visibility contribute to a rewarding dive, allowing ample time to appreciate both the historical significance of the wreck and the thriving ecosystem it supports.

Highlights

Accessible wreck penetrationThriving coral and sponge growthDiverse fish schoolsRemnants of cargo in holdsGood visibility for photography

Season calendar

Best months to dive here
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Excellent
Good
Off-Season

Dec – Apr (Dec–Apr)

Best diving conditions across most regions. Calm seas, excellent visibility. Tubbataha Reef accessible Mar–Jun only. Thresher sharks year-round at Malapascua.

May & Nov (May, Nov)

Weather shifts between seasons. Still excellent diving in many areas. Fewer crowds and lower prices. Some regions still offer perfect conditions.

Jun – Oct (Jun–Oct)

Typhoon season — mainly affects northern regions. Southern Visayas and Mindanao still offer good diving. Reduced visibility. Best prices and fewest crowds.

Dive site facts: Tangat Wreck

Depth
7–30 m
Typical dive
10–22 m, 45–60 min
Current
Light to moderate
Visibility
6–15 m
Water temperature
25–30 °C
Entry
Boat / negative entry possible
Level
Open Water Diver, AOWD for penetration
Dive type
Wreck, reef, history
Night dive
Possible
Region / port
Coron, Palawan
Coordinates
11.964, 120.215

Conditions & Currents

Currents at Tangat Wreck are generally light, though they can occasionally be moderate and dictate the dive profile. Divers should anticipate a current-led profile, which may influence entry and exit strategies, often involving a boat pick-up downcurrent. While surge is typically flat calm, conditions can vary, particularly during the wet season. Visibility can range from 6 meters on average to better during peak dry season months, requiring careful navigation and buddy team awareness, especially within the wreck. Conservative gas planning is advisable given the overhead environment and potential for variable visibility.

Marine life & sighting chances

Barracuda at the dive site Tangat Wreck

Barracuda

common
Lionfish at the dive site Tangat Wreck

Lionfish

common
Frogfish at the dive site Tangat Wreck

Frogfish

occasional
Octopus at the dive site Tangat Wreck

Octopus

occasional
Crab at the dive site Tangat Wreck

Crab

common
Moray Eel at the dive site Tangat Wreck

Moray Eel

common
Green Turtle at the dive site Tangat Wreck

Green Turtle

occasional
Eagle Ray at the dive site Tangat Wreck

Eagle Ray

occasional
Batfish at the dive site Tangat Wreck

Batfish

common
Fusilier at the dive site Tangat Wreck

Fusilier

common
Trevally at the dive site Tangat Wreck

Trevally

common

Dive profile & how the dive runs

Dives at Tangat Wreck typically begin with a boat descent to the wreck's main deck, which starts at around 7 meters. Divers can then explore the superstructure and upper hull, observing the encrusting corals and abundant reef fish. A common route involves heading towards the bow or stern, following the length of the vessel while progressively descending deeper along the hull to its maximum depth of 30 meters. For appropriately trained and experienced divers, careful penetration into the larger cargo holds is possible, offering glimpses into the ship's interior. The dive usually culminates with a slow ascent, completing the safety stop over the shallower parts of the wreck or an adjacent reef area, before surfacing for a boat pick-up.

Underwater photography

Tangat Wreck presents fantastic opportunities for both wide-angle and macro photography. Wide-angle lenses are ideal for capturing the grandeur of the entire wreck, especially when positioned to show the ship's full length or large sections of its coral-covered structure. For internal shots within the cargo holds, a wide-angle lens with strong artificial lighting, such as strobes or video lights, is essential to combat low visibility and highlight details. Macro photographers will find plenty of subjects on the coral growths and within the wreck's crevices, including nudibranchs, crabs, and frogfish; a focus light will be helpful for these smaller creatures. Maintain excellent buoyancy control to avoid disturbing fragile corals or stirring up silt, which can quickly reduce visibility, particularly inside the wreck.

Combine with nearby dive sites

Getting there & logistics

Access to Tangat Wreck is primarily by boat from Coron Town, Busuanga. Divers typically fly into Busuanga Airport (USU) from Manila (MNL) or Cebu (CEB), then take a short van transfer to Coron Town. Most dive operators in Coron offer daily trips to the wrecks, often combining Tangat Wreck with other nearby sites like East Tangat Wreck or Olympia Maru as part of a multi-dive itinerary. Liveaboard options are also available for more extensive wreck exploration across Coron Bay. Trip lengths can vary from single-day excursions to multi-day packages. There are generally no specific dive site fees beyond standard dive package costs; however, marine park fees may apply to some areas within Coron Bay.

Safety & environment

Safety at Tangat Wreck, like all wreck dives, necessitates adherence to strict protocols. Divers must maintain excellent buoyancy to avoid collision with the wreck or stirring up silt. Given the overhead environment in some sections, proper wreck diving training and conservative gas planning are essential for penetrations. The nearest recompression chamber is located in Puerto Princesa, Palawan, which is a significant distance away, making evacuation potentially complex and time-consuming. Therefore, comprehensive dive insurance that covers emergency medical treatment and evacuation is highly recommended. Always dive with a reputable operator and an experienced local guide who is familiar with the wreck and local conditions.

Who it suits, and who it doesn't

Suited for

  • Certified Open Water divers comfortable with mild currents
  • Advanced Open Water divers seeking wreck experience
  • Wreck specialty divers looking for penetration opportunities
  • Underwater photographers interested in history and marine life
  • Divers with an interest in World War II history

Less suited for

  • Beginner divers without proper training or experience
  • Divers uncomfortable with overhead environments
  • Divers with poor buoyancy control
  • Snorkelers (due to depth and structure)

FAQ

Tangat Wreck FAQ

What is the history behind the Tangat Wreck?
The Tangat Wreck, also identified as the Olympia Maru, is a Japanese freighter that was sunk during an American air raid on September 24, 1944. This event was part of a larger effort to disrupt Japanese supply lines during World War II. The wreck now serves as a fascinating underwater historical site.
What kind of marine life can I expect to see at Tangat Wreck?
The wreck is teeming with a variety of marine life due to its extensive coral growth and sheltered areas. Divers commonly spot scorpionfish, barracuda, lionfish, moray eels, crabs, and octopuses. Schools of batfish, fusiliers, and trevallies are also frequently seen around the structure, with occasional sightings of green turtles and eagle rays.
Is the Tangat Wreck suitable for beginner divers?
While the shallower parts of the wreck are accessible to Open Water divers, some experience with currents and good buoyancy control is recommended due to the wreck environment. For exploring deeper sections or attempting penetration into the cargo holds, Advanced Open Water certification and specific wreck diving training are advised to ensure safety.
What are the typical diving conditions at Tangat Wreck?
Diving conditions generally feature light to moderate currents, which can influence the dive plan. Visibility typically ranges from 6 to 15 meters, with better clarity during the dry season. Water temperatures are consistently warm, between 25-30°C. Surface conditions are usually calm, but currents can pick up, so preparation is key.
Can I penetrate the Tangat Wreck?
Yes, some of the large, open cargo holds of the Tangat Wreck allow for penetration. However, this should only be attempted by divers with appropriate wreck diving training and experience, as well as the necessary equipment. It is crucial to dive with a knowledgeable guide and adhere to safety protocols for overhead environments.

Why dive Tangat Wreck from a liveaboard?

Tangat Wreck is one of Philippines's signature dive sites. A liveaboard sleeps you on the water and puts you in the water for three to four guided dives per day, including dawn and night dives that day-boat operators rarely offer. You skip the daily commute back to port and reach quieter, less-crowded sites in the same region on a single trip.

Below are the liveaboards that include Tangat Wreck on their Philippines itineraries.

Liveaboards diving Tangat Wreck

These liveaboards may visit Tangat Wreck on selected itineraries, the exact dive sites depend on departure, weather and conditions.

Infiniti liveaboard at Tangat Wreck

Infiniti

Philippines

25 guests39 m
Seadoors liveaboard at Tangat Wreck

Seadoors

Philippines

16 guests25 m
Resolute liveaboard at Tangat Wreck

Resolute

Philippines

16 guests35 m
Dolphin liveaboard at Tangat Wreck

Dolphin

Philippines

18 guests31 m
Navis 1 liveaboard at Tangat Wreck

Navis 1

Philippines

22 guests23 m
Philippine Siren liveaboard at Tangat Wreck

Philippine Siren

Philippines

16 guests
Palau Sport liveaboard at Tangat Wreck

Palau Sport

Philippines

24 guests38 m
Philippines Aggressor liveaboard at Tangat Wreck

Philippines Aggressor

Philippines

26 guests43 m
Stella Maris Explorer liveaboard at Tangat Wreck

Stella Maris Explorer

Philippines

20 guests33 m
Solitude One liveaboard at Tangat Wreck

Solitude One

Philippines

24 guests52 m
Atlantis Adventurer liveaboard at Tangat Wreck

Atlantis Adventurer

Philippines

16 guests33 m
Philippines Aggressor II liveaboard at Tangat Wreck

Philippines Aggressor II

Philippines

26 guests43 m

Dive sites similar to Tangat Wreck

Same character, same waters, six more sites divers love for the exact same reasons.Compare seasons, access and liveaboard routes, then pick the site that fits your trip best.
© EsriMaxar, Earthstar, GIS

Abila

Alor

Abila is a notable dive site located within the Alor Islands Marine Park, an area celebrated for its rich marine biodiversity due to its position in the Coral Triangle.

Suitable for
Beginner
Current
Mild
Access
Liveaboard only
Depth
—
Theme
Reef
© EsriMaxar, Earthstar, GIS

Adonara Channel stands as one of Alor's most iconic dive sites, celebrated for its dynamic currents and exceptionally rich biodiversity.

Suitable for
Advanced
Current
Strong
Access
Liveaboard or dayboat
Depth
10–40 m
Theme
Drift / Wall
© EsriMaxar, Earthstar, GIS

Adonara Wall

Indonesia

Adonara is an Indonesian island dive site, renowned for its vibrant underwater topography characterized by submerged seamounts.

Suitable for
Intermediate
Current
Strong
Access
Liveaboard or dayboat
Depth
5–35 m
Theme
Seamount / Wall
© EsriMaxar, Earthstar, GIS

Agnay Fish Sanctuary is nestled in a sheltered bay near the village of Agnay in Romblon, a province celebrated for its rich marine biodiversity.

Suitable for
Beginner
Current
Mild
Access
Dayboat
Depth
9–18 m
Theme
Reef
© EsriMaxar, Earthstar, GIS

Ai Island Reef, nestled within the Banda Sea, offers a remarkable diving experience characterized by its rich marine biodiversity and varied underwater topography.

Suitable for
Beginner
Current
Strong
Access
Liveaboard only
Depth
3–30 m
Theme
Reef / Seamount
© EsriMaxar, Earthstar, GIS

Akitsushima

Philippines

The Akitsushima is a distinguished World War II Japanese seaplane tender, sunk in September 1944 during an American air raid in Coron Bay, Palawan.

Suitable for
Advanced
Current
Strong
Access
Dayboat
Depth
22–38 m
Theme
Wreck

12 liveaboards run the Tangat Wreck route.

Three to four guided dives a day on Tangat Wreck and the other signature sites in the Philippines, sleeping right above the reef.