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Dive #511 · Saturday, 7 August 2021 · 11:48–13:26
Kreidesee Hemmoor
E1 Hemmoor, Niedersachsen German quarries, pits and mines
- 2nd dive of the day(also #510 Kreidesee Hemmoor 17:47)
- longest dive of 2021
- deeper than 83 % of all dives
- colder than 85 % of all dives
- Profile
- Max depth
- 25.4 m
- Avg depth
- 10.3 m
- Bottom time
- 98 min
- Water
- 10 °C
- Thermocline
- 10.8 m
Kit
- Gas
- Nitrox 32
- Mode
- Open circuit
- Safety stop
- 6 min
Where
Kreidesee Hemmoor
A chalk pit dug from 1862 to 1976 that filled with groundwater by 1982 — sixty metres deep, full of industrial wreckage, an astronaut's aeroplane and an underwater postbox, and the most-dived site in this log outside the Netherlands.
Dive 31 of 41 here · first 2010 · last Nov 2025
With
On the map
Kreidesee
No route marked
- Entry / exit
- Buoy
- Point of interest
- Car
- Aeroplane
- Boat
- Wreck
- Platform
- Pipe / tube
- Tree
- Ladder / stairs
- Net
- Caravan
- Lighthouse / tower
- Machinery
- Ruin / rubble
- Gate
- Cable reel
- Postbox
- Bridge
- Shark
- Hopper / silo
- Truck
- Other object
- Shoreline
- Depth
Map © divelog-sites contributors, CC BY-SA 4.0 · 53edcaf
Profile
ZHL-16C GF · GF 55/85 · Perdix #63
- Avg depth
- 10.3 m
- Deepest at
- 1:11:50
- Descent
- 14.4 m/min
- fastest
- Ascent
- 12 m/min
- fastest
- Samples
- 642
- every 9.1 s