JUMBO JOIST - Trincomalee & East Coast

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.

Location
Trincomalee & East Coast, Sri Lanka, Indian Ocean & East Africa
Coordinates
7.333334, 81.883330
Type
wreck
Maximum Depth
20m

Best Time to Dive in Trincomalee & East Coast

The warmest water temperatures in Trincomalee & East Coast occur in January, averaging 27.4°C. The coolest conditions are in December at 27.4°C.

Monthly Water Temperatures

  • January: 27.4°C (air: 25.8°C)
  • February: 27.4°C (air: 26.3°C)
  • March: 27.4°C (air: 27.3°C)
  • April: 27.4°C (air: 28.2°C)
  • May: 27.4°C (air: 28.9°C)
  • June: 27.4°C (air: 29.6°C)
  • July: 27.4°C (air: 29.4°C)
  • August: 27.4°C (air: 28.9°C)
  • September: 27.4°C (air: 28.7°C)
  • October: 27.4°C (air: 27.2°C)
  • November: 27.4°C (air: 26.0°C)
  • December: 27.4°C (air: 25.9°C)

Nearby Dive Sites in Trincomalee & East Coast

Nearest Dive Centres to JUMBO JOIST

Marine Life in Trincomalee & East Coast

Home to 259 recorded species including 205 reef fish, 16 hard corals, 14 sea snails & nudibranchs, 7 sharks & rays, 6 seagrass & algae, 5 whales & dolphins.

Notable Species

Recommended Packing List for JUMBO JOIST

Based on average water temperature of 27.4°C.

  • Shorty or Rashguard - warm 27°C water needs minimal exposure protection
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories

Frequently Asked Questions

What is the maximum depth of the JUMBO JOIST shipwreck, and what is the average depth for recreational diving?
The JUMBO JOIST shipwreck is located at a depth of 20m. This depth is generally considered suitable for recreational diving. The provided data does not specify a separate maximum or average depth for the site.
What kind of marine life and historical artifacts can divers expect to see at the JUMBO JOIST wreck?
The JUMBO JOIST is a motor vessel that sank on June 13, 1984, measuring 80.5m x 11.7m. While it is a fascinating wreck, the provided data does not detail specific marine life or historical artifacts beyond its classification as a wreck showing portions of its hull or superstructure. Divers interested in general marine life can explore our wildlife database.
How challenging is the JUMBO JOIST dive site, and is it suitable for beginner or advanced divers?
The JUMBO JOIST dive site is classified as intermediate difficulty. This suggests it is suitable for divers with some experience rather than absolute beginners. While not exclusively for advanced divers, those with intermediate skills will find it a rewarding exploration in Trincomalee & East Coast, Sri Lanka.
What are the best months or seasons to dive the JUMBO JOIST for optimal conditions and visibility?
The provided data for the JUMBO JOIST does not specify the best months or seasons for optimal diving conditions and visibility. For general information on diving seasons in the region, you might consult our When to Dive guide for Trincomalee & East Coast, Sri Lanka.
What diving certifications are required or recommended to explore the JUMBO JOIST shipwreck?
Given the JUMBO JOIST shipwreck's depth of 20m and its intermediate difficulty rating, an Open Water Diver certification would typically meet the depth requirement. However, for comfort and skill proficiency on an intermediate wreck dive, an Advanced Open Water Diver certification or equivalent experience is highly recommended. Always dive within your training and experience limits.
What are the typical current conditions and visibility like at the JUMBO JOIST dive site?
The provided data for the JUMBO JOIST dive site does not include specific details on typical current conditions or visibility. Divers planning to explore this wreck in Trincomalee & East Coast should consult local dive operators for the most up-to-date information on daily conditions.