Diving atSea Tiger Wreck (United States)
The Sea Tiger wreck, a substantial former Chinese trading vessel, rests upright on a sandy bottom off the south shore of Oʻahu, near Waikiki Beach. Sunk in 1999 as an artificial reef, this 51-meter (168-foot) ship provides an accessible structure for divers. Its mast points upwards from approximately 30-37 meters (90-120 ft) below the surface, with the main deck starting around 18-24 meters (60-80 ft). Divers can explore the cargo holds, mid-ship, and bridge.
Evening condition tracking at Sea Tiger Wreck features an air temperature of 25.1°C. We have recorded wave heights measuring 0.84m during this period. These figures outline the environmental parameters currently present.
Dive Site Coordinates
21.2707, -157.8386
Dive Site Characteristics
Key Dive Site Facts
Dive Site Overview
Diving the Sea Tiger offers an immersive journey into one of Hawaii's most significant artificial reefs, distinguished by its remarkable structural integrity and the vibrant ecosystem it supports. This 51-meter (168-foot) cargo ship, originally named Yun Fong Seong No.
303, was confiscated in the early 1990s and later cleaned and purposefully sunk in 1999 as part of a dive enrichment initiative. It provides a unique blend of history and marine habitat. Advanced divers will find multiple opportunities for exploration, including several swim-throughs within the cargo holds and bridge, which are popular areas.
The wreck rests on a sandy seafloor, with its highest points around 18-24 meters (60-80 ft) and the maximum depth extending to 30-37 meters (90-121 ft). With often clear visibility, typically ranging from 22-30 meters (70-100 ft), divers can easily appreciate the scale of the vessel and the diverse life that has colonized its surfaces.
Eagle rays frequently circle its perimeter, while various reef sharks and moray eels inhabit its nooks and crannies.
Best Time to Dive
Planning a dive to the Sea Tiger benefits from consistently warm air temperatures, averaging between 22-26°C (72-79°F) throughout the year, ensuring comfortable surface conditions. Rainfall remains relatively low across all months, with particularly minimal amounts in late summer and early fall, such as September's average of 1.1 mm. Dive conditions are generally rated as 'Good' for most of the year, spanning January, February, and June through December. The period from March to May sees a 'Moderate' rating, although still offering viable diving opportunities. While water temperatures are not consistently reported in available data, they typically align with the comfortable air temperatures, providing pleasant underwater conditions. Winds usually range from 18-25 km/h, and wave heights hover around 1.1-1.3 meters, which can influence surface conditions but generally allow for regular boat access to the site.
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
Descending onto the Sea Tiger offers a clear view of its impressive form, typically within 22-30 meters (70-100 ft) of visibility. As you approach, the main deck becomes visible around 18-24 meters (60-80 ft), allowing for extensive exterior exploration. The wreck then tapers down to the sandy bottom at 30-37 meters (90-121 ft), where white tip reef sharks and octopus often find refuge between the hull and the seafloor. Divers with the appropriate training can navigate through popular swim-throughs in the cargo holds and bridge, experiencing the interior structure while being mindful of penetration limits. Given the maximum depth, bottom time usually averages between 20-25 minutes. This dive requires advanced certification due to its depth profile and the potential for overhead environments.
Dive Difficulty & Safety Guidelines
Approaching the Sea Tiger wreck demands an advanced diver certification given its operational depth, which can reach up to 37 meters (121 ft). For any exploration beyond the exterior, such as navigating the swim-throughs or considering deeper penetration, specialized wreck diving training is essential. Charters typically provide thorough briefings before each dive, detailing the wreck's layout and any specific considerations for the day's conditions. Although the Sea Tiger remains largely intact, divers should always practice responsible wreck diving protocols, including maintaining buoyancy control and being aware of their gas supply, especially when exploring deeper sections or overhead environments. It's prudent to plan for limited bottom time at the maximum depth to manage decompression obligations effectively.
Recommended Equipment
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Verified equipment recommendations for this dive site are being reviewed and may be added as additional source checks are completed.
Recommended Dive Suit
The coming days appear slightly cooler according to the latest forecast. Cooler days are ahead; you might want a warmer option for later in the week. Divers planning multiple dives may appreciate having a warmer option available.
Some divers prefer slightly warmer exposure protection simply for additional comfort. Stronger winds may also make surface intervals feel cooler than usual.
3mm wetsuit usually works well for maintaining comfort during standard dive profiles in these conditions. Consider warmer surface protection (like a boat coat) due to brisk winds. Divers preparing to enter the water at Sea Tiger Wreck will likely find temperatures around 26°C (78°F) today. Surface air temperatures are resting at 25°C (77°F).
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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Marine Life at Sea Tiger Wreck
The Sea Tiger wreck serves as a thriving artificial reef, attracting a diverse array of marine inhabitants. Eagle rays are frequently observed circling the entire wreck, creating a dynamic spectacle. Within its structure and along the sandy bottom, divers often encounter resident white tip reef sharks and various moray eels. Green sea turtles are also commonly seen resting on the wreck's surfaces. Look closely for macro life, including nudibranchs, frogfish, and leaf scorpionfish, which blend into the structure. Schooling fish routinely weave through the vessel, adding to the vibrant underwater scene.
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Frequently Asked Questions
How deep is the Sea Tiger wreck?
The Sea Tiger wreck rests upright on a sandy bottom at a maximum depth of approximately 30-37 meters (90-121 ft). The main deck is shallower, typically found between 18-24 meters (60-80 ft).
What skill level is required to dive the Sea Tiger?
This is considered an advanced dive. Divers should hold an advanced certification due to the depth profile. For any wreck penetration, specialized training like an SSI Wreck Diving or Advanced Wreck Diving certification is necessary.
Can divers penetrate the Sea Tiger wreck?
Yes, the Sea Tiger offers several swim-throughs and penetration possibilities, including the cargo holds, mid-ship, and bridge. However, these require specific wreck diving education and experience to explore safely.
What marine life can be seen at the Sea Tiger?
The wreck is a magnet for marine life. Divers frequently encounter eagle rays, resident white tip reef sharks, moray eels, and resting turtles. Macro life such as nudibranchs, frogfish, and leaf scorpionfish are also commonly spotted.
What is the history of the Sea Tiger?
The Sea Tiger was a former Chinese trading vessel, confiscated in the early 1990s. It was later cleaned and intentionally sunk in 1999 as part of Hawaii's artificial reef program, now serving as a dive attraction.
What is the typical visibility at the Sea Tiger wreck?
Visibility at the Sea Tiger is generally very good, often ranging from 22-30 meters (70-100 ft). This allows for clear views of the wreck and its surrounding marine environment.
Is the Sea Tiger wreck structurally intact?
Yes, despite being sunk in 1999, the Sea Tiger is remarkably intact. While some minor decay is present inside, its main structure and popular swim-throughs remain stable for trained divers.
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