Marietta Dal (Wreck)
The Marietta Dal is a captivating shipwreck off Brisbane, Australia. This 7500-tonne liberty ship, built in the USA in 1944, sank on May 15, 1950, while carrying a diverse cargo including sulphur, oil, tractors, and other general goods. Now resting in depths ranging from 10 to 18 meters, the Marietta Dal offers an intriguing diving experience.
Divers will discover a scattering of wreckage spread over a wide area of Smith Rock. The main section of the wreck showcases a fascinating jumble of twisted plates, beams, and the elongated prop shaft. However, the real highlight lies in the cargo of tractors, resembling small tanks with their distinctive caterpillar tracks. Even without the remnants of the ship, this dive site boasts an abundance of ledges, caves, and gutters teeming with vibrant marine life.
With a visibility of 17 meters and a maximum depth of 16 meters, the Marietta Dal wreck is suitable for divers of all skill levels, including beginners. Located in Queensland, Australia, this captivating dive site is sure to leave divers with unforgettable memories.
Divers will discover a scattering of wreckage spread over a wide area of Smith Rock. The main section of the wreck showcases a fascinating jumble of twisted plates, beams, and the elongated prop shaft. However, the real highlight lies in the cargo of tractors, resembling small tanks with their distinctive caterpillar tracks. Even without the remnants of the ship, this dive site boasts an abundance of ledges, caves, and gutters teeming with vibrant marine life.
With a visibility of 17 meters and a maximum depth of 16 meters, the Marietta Dal wreck is suitable for divers of all skill levels, including beginners. Located in Queensland, Australia, this captivating dive site is sure to leave divers with unforgettable memories.
Diving Conditions Score for Marietta Dal (Wreck)
6
Above AverageDecent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Marietta Dal (Wreck)
Depth
16m
Visibility
17m
Experience Level
beginner
Weather Conditions for Marietta Dal (Wreck)
Wave Height
0.88m
Wind Speed
17.8 m/s
Water Temp
21.5°C
Visibility
52.92km
Cloud Cover
2%
Wave Period
5.35s
Air Temperature
18.6°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Marietta Dal (Wreck)
Alpha
Dive Score Chart for Marietta Dal (Wreck)
Best time to dive: 6:00 with score 7.293793103448277/10. Water conditions: Waves 0.8m, Wind 9.4 m/s.Best night dive time: 5:00 with score 6.720935672514621/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Marietta Dal (Wreck): 06:00
Sunset at Marietta Dal (Wreck): 18:00
Optimal diving conditions at Marietta Dal (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.
Best Overall
6:00Score: 7.3/10
Waves: 0.8m (5.8s), Wind: 9.4 m/s
Best Night
5:00Score: 6.7/10
Waves: 0.82m, Wind: 11.6 m/s
Seasonal Analysis for Marietta Dal (Wreck)Alpha
Historical patterns and best seasons for diving at Marietta Dal (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 Marietta Dal (Wreck)
Summer
Avg. Score: 8.5/10
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for Marietta Dal (Wreck)
July
Score: 8.5
August
Score: 8.5
June
Score: 8.4
Ideal Conditions for Marietta Dal (Wreck)
Water Temp
22.2°C / 72.0°F
March
Visibility
12.0m / 39.4ft
June
Wave Height
1.7m / 5.6ft
January
Wave Period
8.0s
January
Seasonal Insights for Marietta Dal (Wreck)
Marietta Dal (Wreck) follows southern hemisphere patterns with March being the warmest month (22.2°C) and July the coldest (16.1°C). The calmest conditions typically occur in January with average wave heights of 1.7m 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). June 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: 1 min. ago - Jun 23, 2026
Note: This dive site is not a verified dive site. Please dive with caution. This dive site might have incorrect information by the community.
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