WITSERVICE IV - St. Thomas & St. John
The Witservice IV, a tugboat that met its end on Little Saba Reef back in '81, is a proper St. Thomas classic. She’s sitting upright at 33 meters, and you can’t help but feel a bit of history here, knowing the story of her journey from St. Croix gone wrong. We love a wreck with character, and this one delivers. Our favourite part is poking around her superstructure. Schools of grunts and snapper often hang out in the wheelhouse, giving it a ghost ship vibe. The exterior is nicely encrusted with hard corals, and you’ll spot plenty of lobsters tucked into crevices. Take your time to really explore the deck, but keep an eye on your depth and bottom time. This site is best for experienced divers comfortable with deeper profiles, especially since currents can pick up a bit out here. It's a proper wreck dive, not just a reef with a boat on it.
- Location
- St. Thomas & St. John, US Virgin Islands, Caribbean
- Coordinates
- 18.325000, -65.105000
- Type
- wreck
- Maximum Depth
- 33m
Marine Protected Area: Kalkun Cay
Best Time to Dive in St. Thomas & St. John
The warmest water temperatures in St. Thomas & St. John occur in January, averaging 27.1°C. The coolest conditions are in December at 27.1°C.
Monthly Water Temperatures
- January: 27.1°C (air: 25.0°C)
- February: 27.1°C (air: 24.6°C)
- March: 27.1°C (air: 24.7°C)
- April: 27.1°C (air: 25.2°C)
- May: 27.1°C (air: 26.3°C)
- June: 27.1°C (air: 27.0°C)
- July: 27.1°C (air: 27.3°C)
- August: 27.1°C (air: 27.5°C)
- September: 27.1°C (air: 27.7°C)
- October: 27.1°C (air: 27.5°C)
- November: 27.1°C (air: 26.6°C)
- December: 27.1°C (air: 25.8°C)
Nearby Dive Sites in St. Thomas & St. John
- Buck Island Point (Submarine Alley) - 18m
- Cabrita - 13m (reef)
- Cabrita Pinnacle - 15m (pinnacle)
- CARIDAD - 6m (wreck)
- Cartanser Sr. Wreck - 10-18m (wreck)
- CHARMAINE (?CHARMAINE II) - 35m (wreck)
- Christmas Cove - 10m (reef)
- Coki Point Beach - 14m
- Cow and Calf Rocks - 10-25m (pinnacle)
- Cow Rock - 14m
- DAISY - 23m (wreck)
- DIFFERENT DRUMMER - 2m (wreck)
- Dog Island - 14m
- Flag Pole Little St James - 11m
- French Cap Pinnacle - 22m (pinnacle)
Nearest Dive Centres to WITSERVICE IV
Marine Life in St. Thomas & St. John
Home to 488 recorded species including 390 reef fish, 39 hard corals, 14 sharks & rays, 11 other, 7 whales & dolphins, 6 seagrass & algae.
Notable Species
- Mustard hill coral (Porites astreoides) - Hard Corals
- Massive Starlet Coral (Siderastrea siderea) - Hard Corals
- Gutong (Sparisoma aurofrenatum) - Reef Fish
- Parrotfish (Thalassoma bifasciatum) - Reef Fish
- Great star coral (Montastraea cavernosa) - Hard Corals
- Yellowhead Wrasse (Halichoeres garnoti) - Reef Fish
- Blue Doctor (Acanthurus coeruleus) - Reef Fish
- Finger Coral (Porites porites) - Hard Corals
- Gutong (Scarus iseri) - Reef Fish
- Barber (Acanthurus bahianus) - Reef Fish
- Lettuce Coral (Agaricia agaricites) - Hard Corals
- Bicolor Damselfish (Stegastes partitus) - Reef Fish
- Dark Green Parrotfish (Sparisoma viride) - Reef Fish
- Sammy Johnson (Scarus taeniopterus) - Reef Fish
- French grunt (Haemulon flavolineatum) - Reef Fish
- Sharpnose Pufferfish (Canthigaster rostrata) - Reef Fish
- Butterfly (Chaetodon capistratus) - Reef Fish
- Longspine Squirrelfish (Holocentrus rufus) - Reef Fish
- Cola (Ocyurus chrysurus) - Reef Fish
- Barred Hamlet (Hypoplectrus puella) - Reef Fish
Recommended Packing List for WITSERVICE IV
Based on average water temperature of 27.1°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