JUMBO JOIST
Why dive here
With 254+ marine species recorded in the area - including barracuda, dolphins, sea turtles, sperm whales and spinner dolphins - JUMBO JOIST offers some of Trincomalee & East Coast's richest wreck diving. Water ranges 27-30°C, warmest April, May, October.
Jumbo Joist is a proper wreck dive, our pick for Trincomalee if you're into something a bit more substantial than a reef. This old motor vessel went down in '84, and she's settled upright on a sandy bottom at 20 metres. You can really get a feel for her scale as you descend, the 80-metre length stretching out below you. We love exploring her holds, especially the number one and two where she took on water. There's a tangible sense of history down there, a quiet hum in the water as you glide through the darker sections. On the superstructure, schools of fusiliers are usually so thick they almost block out the light. Look closely and you'll often spot scorpionfish camouflaged on the plating, and groupers have claimed the deeper nooks as their territory. Visibility here can be excellent, making the whole wreck accessible to divers comfortable with penetration and deeper dives. It’s an easy-going wreck, no strong currents to worry about, just a grand old lady waiting to be explored.
Typical JUMBO JOIST Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Depth of 20m - Advanced Open Water certification recommended.
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Always perform a 3-minute safety stop at 5m before surfacing.
Reviews for JUMBO JOIST
Conditions
Ocean conditions, forecast and tides for JUMBO JOIST
JUMBO JOIST Ocean Conditions
Monthly averages for JUMBO JOIST, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (8.53, 81.23) (31km away)
October Averages
Sea Temperature
30°C
85°F · Range: 27.5–30.3°C
Air Temperature
27°C
81°F
Wind Speed
4.73 m/s
9.2 knots
Atmospheric Pressure
1009 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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