

Best for advanced divers, 15-60m, boat entry, strong current.
Grand Banc is an advanced dive site located 21 kilometres offshore from Sakata, Madagascar. The topography consists of a wall, drop-off, and pinnacle structure that descends from 15 to 60 metres, with an average depth of 30 metres. This site is accessible by boat only and is defined by strong currents that can shift rapidly. Visibility typically ranges between 15 and 30 metres. Due to the depth and current conditions, this site is suitable for advanced divers only. Divers should remain alert for sharks and maintain awareness of the overhead cave environment. Typical dive times are approximately 45 minutes.
-13.31795, 48.01290
Current strength and direction at Grand Banc can shift quickly, so brief your guide thoroughly before descending and confirm a clear abort signal with your buddy. Check locally for the most current advice on conditions and boat operators, as facilities are not fixed.
Approximately 2 hours by boat from Nosy Be.
Recorded at this site
Depth
15-60m
Visibility
15-30m
Skill Level
Advanced
Entry
Boat
Boat required
Water Temp
26-28°C
Current
Strong
Typical Dive
45 min
Best Time
May, Jun, Jul, Aug, Sep, Oct, Nov
No, this site is intended for advanced divers due to the significant depths, strong currents, and challenging topography.
The site features a structure ranging from 15 to 60 metres, with an average depth of 30 metres.
Grand Banc is a boat-only dive site located 21 kilometres from the shore.
The main hazards include strong, shifting currents, the presence of sharks, and an overhead cave environment.
Diving at Grand Banc in Nosy Be requires the following certifications: Advanced. Always dive within your training limits.
A 3mm wetsuit is recommended for diving at Grand Banc in Nosy Be. Water temperatures range from 26°C to 28°C.
The best months to visit Grand Banc in Nosy Be are May, June, July, August, September, October, and November. Conditions outside these months can still be good but are less predictable.
Grand Banc in Nosy Be can have strong currents. Advanced experience with drift diving and current navigation is recommended.
Visibility at Grand Banc in Nosy Be typically ranges from 15 metres to 30 metres. Conditions vary with weather, tides, and seasons.