UNISON IV
Protected Area
Labrador Nature Reserve
Why dive here
With 263+ marine species recorded in the area - including blue-spotted stingrays, dugongs, giant moray eels, seahorses and sea turtles - UNISON IV offers some of Southern Islands's richest wreck diving. Water ranges 28-31°C, warmest May, June, November.
The UNISON IV is our favourite local wreck, not because it’s a giant, but because it’s so… *there*. Sunk in 1990, this 70-meter motor vessel sits upright and largely intact, making for an incredibly atmospheric dive. We love dropping down onto the main deck, often with schooling fusiliers swirling above us like a silver curtain. You can still make out the superstructure, the bridge, even the mast reaching towards the surface – it's a proper ship shape. What really makes the UNISON IV shine is the life that’s colonised it. Every crevice seems to hold something. Look for batfish hovering lazily around the mast, and we’ve often found lionfish tucked into doorways. On a sunny day, the light filters through the upper sections, creating these fantastic shafts of light, almost theatrical. It’s a site that rewards multiple dives; you always spot something new, a different angle, another resident moray eel peeking from a porthole. It’s perfect for divers who appreciate history and the way the sea reclaims its own, offering plenty to explore without being overly challenging.
Typical UNISON IV Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
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.
Nearest Dive Centres to UNISON IV
Dive shops near UNISON IV
S.E.A
Swim Hero Swimming Academy
OrcaNation Singapore
CF Divers Pte Ltd
REN Scubaworx
DiveLab
Reviews for UNISON IV
Conditions
Ocean conditions, forecast and tides for UNISON IV
UNISON IV Ocean Conditions
Monthly averages for UNISON IV, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (1.18, 103.96) (8km away)
October Averages
Sea Temperature
30°C
86°F · Range: 29.5–31.1°C
Air Temperature
27°C
81°F
Wind Speed
4.07 m/s
7.9 knots
Atmospheric Pressure
1009.8 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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