CLAN MACWILLIAM - Vava'u Group

The Clan MacWilliam isn't just a wreck, it's a colossal piece of history, and we love how it totally dominates the seabed in Vava'u. This isn't some small fishing boat; at 140 meters long, it’s a seriously big steamship, sunk intentionally back in 1905 to clear a channel. Dropping down, the sheer scale of it hits you – the bow points towards the surface, its massive plates covered in decades of growth. Visibility here can vary, but even on a slightly murkier day, the outline of this monster emerging from the blue is impressive. Our favourite part is cruising along the deck, imagining the life that once bustled here. Now, schools of fusiliers swirl like silver blizzards around the superstructure, darting away as you approach. Look closely, and you'll spot resident lionfish tucked into shadowed corners, their venomous spines fanning out. We’ve even seen grey reef sharks patrolling the deeper sections, making a wide circle before disappearing into the gloom. It’s a site for experienced wreck divers, certainly, those who appreciate the historical weight and the slow reclamation by the ocean. Don't expect intricate penetration; this is about absorbing the grandeur of a century-old behemoth. Plan for a long bottom time, you'll need it to take it all in.

Location: Vava'u Group, Tonga, Central & South Pacific
Coordinates: -18.671110, -173.991100
Type: wreck
Maximum Depth: 30m

Marine Protected Area: 'Utulei SMA

Best Time to Dive in Vava'u Group

The warmest water temperatures in Vava'u Group occur in January, averaging 27.8°C. The coolest conditions are in December at 27.8°C.

Monthly Water Temperatures

January: 27.8°C (air: 27.0°C)
February: 27.8°C (air: 26.9°C)
March: 27.8°C (air: 27.1°C)
April: 27.8°C (air: 26.8°C)
May: 27.8°C (air: 26.1°C)
June: 27.8°C (air: 25.1°C)
July: 27.8°C (air: 24.6°C)
August: 27.8°C (air: 24.0°C)
September: 27.8°C (air: 24.5°C)
October: 27.8°C (air: 24.9°C)
November: 27.8°C (air: 25.7°C)
December: 27.8°C (air: 26.5°C)

Nearest Dive Centres to CLAN MACWILLIAM

AX-Factor Dive - SSI
Beluga Diving

Marine Life in Vava'u Group

Home to 322 recorded species including 300 reef fish, 9 sea cucumbers, 4 sea snails & nudibranchs, 2 sharks & rays, 2 whales & dolphins, 2 hard corals.

Notable Species

Bristle-toothed Surgeonfish (Ctenochaetus striatus) - Reef Fish
Bullethead Parrotfish (Chlorurus sordidus) - Reef Fish
Blackspot Surgeonfish (Acanthurus nigrofuscus) - Reef Fish
Schlegel's Parrotfish (Scarus schlegeli) - Reef Fish
Blue-lined Tang (Zebrasoma scopas) - Reef Fish
Rivulated Parrotfish (Scarus rivulatus) - Reef Fish
Banded Goatfish (Parupeneus multifasciatus) - Reef Fish
Bleeker's Parrotfish (Chlorurus bleekeri) - Reef Fish
Halfmoon triggerfish (Sufflamen chrysopterum) - Reef Fish
Wrasse (Thalassoma lunare) - Reef Fish
Dusky Parrotfish (Scarus niger) - Reef Fish
Kihikihi (Zanclus cornutus) - Reef Fish
Atoll Butterflyfish (Chaetodon mertensii) - Reef Fish
Hoeven's wrasse (Halichoeres melanurus) - Reef Fish
Clown Tang (Naso lituratus) - Reef Fish
Parrotfish (Thalassoma lutescens) - Reef Fish
Coral Beauty (Centropyge bispinosa) - Reef Fish
Bandcheek wrasse (Oxycheilinus digramma) - Reef Fish
Desjardin's Sailfin Tang (Zebrasoma velifer) - Reef Fish
Redfin Butterflyfish (Chaetodon lunulatus) - Reef Fish

Recommended Packing List for CLAN MACWILLIAM

Based on average water temperature of 27.8°C.

Shorty or Rashguard - warm 28°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