American Tanker, wreck
As you explore the American Tanker, you'll be accompanied by vibrant butterfly and damsel fish, creating a mesmerizing underwater experience. Macro photographers will have the opportunity to capture stunning shots of skeleton shrimp residing on the clear tunicates scattered around the wreck.
This dive site caters to both beginners and experienced wreck divers. Beginners will find it an easy dive, while experienced divers can delve deeper into the submerged wreckage. Noteworthy features to explore include the pilot house near the stern and the presence of majestic elephant ear sponges strewn across the main deck. Don't miss the iconic American flag hanging off the western side of the pilothouse.
Important note: It is crucial to have proper wreck diver training before entering any overhead spaces or attempting to breathe any trapped air. Always ensure you stay within your limits while diving.
Location: Glass Breakwater, Port of Guam, Piti Municipality, Guam, United States
Visibility: Up to 12 meters
Max Depth: 22 meters
Recommended Diver Level: Advanced, Expert
Diving Conditions Score for American Tanker, wreck
Very good diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for American Tanker, wreck
Depth
22m
Visibility
12m
Experience Level
Weather Conditions for American Tanker, wreck
Wave Height
0.96m
Wind Speed
2 m/s
Water Temp
29.8°C
Visibility
6.98km
Cloud Cover
30%
Wave Period
7.3s
Air Temperature
25.7°C
Precipitation
0.1 mm
Dive Score Chart for American Tanker, wreck
Best time to dive: 17:00 with score 8.203187671232875/10. Water conditions: Waves 0.96m, Wind 3.3 m/s.Best night dive time: 20:00 with score 7.991641379310345/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at American Tanker, wreck are affected by daylight hours. Sunrise occurs at 06:00 and sunset at 18:00, which impacts visibility and water temperature for scuba diving and snorkeling.
Score: 8.2/10
Waves: 0.96m (7.3s), Wind: 3.3 m/s
Score: 8.0/10
Waves: 0.96m, Wind: 1 m/s
Seasonal Analysis for American Tanker, wreckAlpha
Historical patterns and best seasons for diving at American Tanker, wreck
The dive score combines all factors to rate overall diving conditions throughout the year. Higher scores indicate better diving conditions.
Monthly Dive Score Analysis - Seasonal Diving Conditions
Higher values indicate better diving conditions
Seasonal DiveScore Chart
This chart displays monthly diveScore data throughout the year, showing seasonal patterns. The data is presented as a bar chart with an overlaid line graph.Dive scores range from 1 to 10, with 10 being optimal conditions.
Higher values indicate better diving conditions
Best Season for American Tanker, wreck
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for American Tanker, wreck
Ideal Conditions for American Tanker, wreck
Water Temp
21.3°C / 70.3°F
June
Visibility
20.1m / 65.9ft
May
Wave Height
0.2m / 0.7ft
January
Wave Period
8.0s
January
Seasonal Insights for American Tanker, wreck
American Tanker, wreck shows typical northern hemisphere patterns with June being the warmest month (21.3°C) and December the coldest (17.3°C). The calmest conditions typically occur in January with average wave heights of 0.2m and wave periods of 8.0s. The most comfortable wave conditions are in January with a low wave steepness ratio, creating gentler swells. January offers the longest wave periods (8.0s), creating more comfortable and predictable conditions for boat entries and exits. Ocean currents are slowest in January (0.5m/s) and strongest in January (0.5m/s). January is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during January to March, when ocean conditions are calmer with long-period waves and currents are typically weaker. Experienced divers might enjoy the challenges and potentially better visibility during the shoulder seasons, with moderate currents that can improve marine life encounters.
Last updated: 31 min. ago - Jun 22, 2026