GEO LAB BARGE NO 1 - Southern Islands

GEO LAB BARGE NO 1 isn't your average Singapore dive, and that's precisely why we love it. Dropping down, the barge looms out of the green, a significant metal structure that feels much bigger than you expect at 25m. Our favourite part is navigating the twisted metal, imagining its working life before it found its final resting place. We’ve spotted big schools of fusiliers here, swirling around the deeper parts of the wreck, and once saw a decent-sized barracuda just hanging out in the gloom. It’s a site that rewards careful exploration, peering into the nooks and crannies to see what’s taken up residence. The wreck itself is classified as dangerous, which means experienced divers are best suited here, those comfortable with deeper dives and overhead environments, even if you’re just hovering above. Visibility can be a real mixed bag, often settling around the 3-5 meter mark, occasionally pushing to 8 or 10 meters on a good day, so a good dive light is non-negotiable. We’d suggest going during slack tide, as currents around the Southern Islands can really pick up, making it a challenging dive to enjoy properly. Keep an eye out for the resident batfish and various nudibranchs that cling to the rusting hull – they’re surprisingly colourful against the muted backdrop.

Location: Southern Islands, Singapore, Southeast Asia
Coordinates: 0.974404, 103.592674
Type: wreck
Maximum Depth: 25m

Marine Protected Area: Labrador Nature Reserve

Best Time to Dive in Southern Islands

The warmest water temperatures in Southern Islands occur in January, averaging 28.2°C. The coolest conditions are in December at 28.2°C.

Monthly Water Temperatures

January: 28.2°C (air: 26.0°C)
February: 28.2°C (air: 26.6°C)
March: 28.2°C (air: 27.1°C)
April: 28.2°C (air: 27.4°C)
May: 28.2°C (air: 27.9°C)
June: 28.2°C (air: 27.4°C)
July: 28.2°C (air: 27.5°C)
August: 28.2°C (air: 27.2°C)
September: 28.2°C (air: 27.2°C)
October: 28.2°C (air: 27.2°C)
November: 28.2°C (air: 26.5°C)
December: 28.2°C (air: 26.3°C)

Nearest Dive Centres to GEO LAB BARGE NO 1

Marine Life in Southern Islands

Home to 284 recorded species including 179 reef fish, 46 hard corals, 17 seagrass & algae, 13 sharks & rays, 8 sea snails & nudibranchs, 6 other.

Notable Species

Species code: Ea (Enhalus acoroides) - Seagrass & Algae
thalassia (Thalassia hemprichii) - Seagrass & Algae
seagrass (Halophila ovalis) - Seagrass & Algae
halodule (Halodule uninervis) - Seagrass & Algae
cymodocea (Cymodocea rotundata) - Seagrass & Algae
Species code: Si (Syringodium isoetifolium) - Seagrass & Algae
Brain coral (Platygyra sinensis) - Hard Corals
Staghorn coral (Acropora millepora) - Hard Corals
Staghorn coral (Acropora hyacinthus) - Hard Corals
Fluorescence grass coral (Galaxea fascicularis) - Hard Corals
Staghorn coral (Acropora valida) - Hard Corals
Honeycomb coral (Favites abdita) - Hard Corals
Galaxea coral (Galaxea astreata) - Hard Corals
Species code: Tc (Thalassodendron ciliatum) - Seagrass & Algae
Bristle-tailed Leatherjacket (Acreichthys tomentosus) - Reef Fish
Green Turtle (Chelonia mydas)
Butterfish (Scatophagus argus) - Reef Fish
Stony coral (Echinopora lamellosa) - Hard Corals
Staghorn coral (Acropora nasuta) - Hard Corals
Savigny's Brittle Star (Ophiactis savignyi)

Recommended Packing List for GEO LAB BARGE NO 1

Based on average water temperature of 28.2°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