

Best for advanced divers, 20-70m, boat entry, moderate current.
Karholmen Ost is a deep-water site located off the coast of Drøbak and Vestby, Norway. The topography drops sharply from 20 to 70 metres, requiring advanced technical skills and careful gas management. Divers encounter moderate currents and visibility ranging from 10 to 30 metres. Due to the significant depths and potential for nitrogen narcosis, decompression planning is essential. Water temperatures fluctuate between 4 and 18 degrees Celsius, necessitating the use of a drysuit. Access to this site is by boat only. Divers must remain vigilant regarding active boat traffic in the area and should deploy a surface marker buoy throughout the dive.
59.67875, 10.60870
The site features a vertical wall with some overhangs and is usually subject to tidal currents.
Access is by boat.
Recorded at this site
Depth
20-70m
Visibility
10-30m
Skill Level
Advanced
Entry
Boat
Boat required
Water Temp
4-18°C
Current
Moderate
The site features depths ranging from 20 to 70 metres.
No, this site is intended for advanced divers due to the significant depths, decompression requirements, and moderate currents.
Access to Karholmen Ost is by boat only.
Hazards include decompression requirements, deep water, nitrogen narcosis, and moderate currents. Additionally, divers must watch for active boat traffic.
No, this site is not suitable for snorkelling due to the extreme depths and the requirement for advanced technical diving equipment.
Diving at Karholmen Ost in Drøbak requires the following certifications: Advanced, Deep. Always dive within your training limits.
A drysuit recommended is recommended for diving at Karholmen Ost in Drøbak. Water temperatures range from 4°C to 18°C.
Expect moderate currents at Karholmen Ost in Drøbak. Good buoyancy control and some drift diving experience is helpful.
Visibility at Karholmen Ost in Drøbak typically ranges from 10 metres to 30 metres. Conditions vary with weather, tides, and seasons.