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Dive #510 · Saturday, 7 August 2021 · 17:47–18:45
Kreidesee Hemmoor
E1 Hemmoor, Niedersachsen German quarries, pits and mines
- First of 2 dives that day(also #511 Kreidesee Hemmoor 11:48)
- deepest dive of 2021
- colder than 97 % of all dives
- Profile
- Max depth
- 43.8 m
- Avg depth
- 18.7 m
- Bottom time
- 58 min
- Water
- 5 °C
Kit
- Gas
- Trimix 21/35
- Mode
- Open circuit
- Surface interval
- 4:22
- Safety stop
- 11 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 30 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 50/85 · deco · Perdix #64
- Avg depth
- 18.7 m
- Deepest at
- 12:40
- Descent
- 14 m/min
- fastest
- Ascent
- 8.4 m/min
- fastest
- In deco
- 43.8 min
- deepest stop 12 m
- First stop at
- 10:00
- Samples
- 396
- every 8.7 s
T