

Best for intermediate divers, 20-40m, boat entry.
Portasub offers a combination of reef and wreck diving in Lake Geneva. The site drops from 20 to 40 metres, placing it in the deep diving category for freshwater environments. Divers should expect visibility between 5 and 10 metres, which can fluctuate during the descent. As a boat-only site, proper charter arrangements are required. The environment is current-free, though divers must manage hazards including cold water temperatures and surface boat traffic. Due to the depth and conditions, this site is suited for intermediate divers. A drysuit or a well-rated wetsuit is recommended regardless of the season to manage the cold water.
46.92557, 6.95750
Cold water is a constant here regardless of season, so a drysuit or a well-rated wetsuit is worth the effort even in summer. Keep an eye on surface traffic when ascending and deploy an SMB before you come up.
Located on Route du Port 15, Delley-Portalban.
Recorded at this site
Depth
20-40m
Visibility
5-10m
Skill Level
Intermediate
Entry
Boat
Boat required
Current
None
Typical Dive
60 min
The site features depths ranging from 20 to 40 metres.
No, this site is rated for intermediate divers due to the depth and environmental conditions.
Access to Portasub is by boat only; you must confirm your charter arrangements before arrival.
Divers must remain alert for boat traffic near the surface, cold water temperatures, and variable visibility.
Diving at Portasub in Delley-Portalban requires the following certifications: Open Water. Always dive within your training limits.
Visibility at Portasub in Delley-Portalban typically ranges from 5 metres to 10 metres. Conditions vary with weather, tides, and seasons.