Depth
43 m
Dive profile
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Comments
Sunday morning TEK-diving trip for KUPLA club TMX divers with Hinkki boat.
Attendants: me, Leppis, Pekka H, Pekka T, Henri, Liisa, Tommi
Intended 7 divers, but in the end Pekka T skipped the dive.
Intention was to dive Munin wreck, but due to bad weather we decided to dive Alca instead.
Intetion was to leave Otaniemi at 11, and we almost did.
At departure it was quite windy and cloudy.
We decided to drive along the innermost route in shelter of the islands towards east, and then only when approaching the wreck location drive out to the open high seas.
The inner route was quite ok, 1 hour of travel in shelter of the SE wind, but once we got to open sea, the waves were abou meter high and hitting hard. In shelter we could do 22 kts, but in the big waves noyl 12 to 15 kts and heavy banging against waves.
At Söderskär lighthouse we stopped to evaluate sitation and concluded that it was not possible to find and dive Munin in this weather. The sonar would not work in finding the wreck at 55 m depth.
Munin has no fixed buoy.
So fallback was the wreck of Alca just nearby. It had fixed buoy so we could attach Hinkki to it and finding the wreck would not be a problem.
Pekka T. decided not to dive.
Alca was a small steam shiop that sank 28th August 1951. It hit a loose sea mine.
During WW2 thousands of sea mines were laid to the Bay of Finland, and it took years to clear them out.
Several years after the war ships kept hitting loose mines. Even today it is still possible to find sea mines.
The wreck wasn't too badly broken and it stands on its keel.
Teams:
1. Liisa, Tommi, both CCR
2. Pekka H. Henri
3. Ian, Leppis, both on 2x12L TMX 21/35 + 7L 50%
Liisa wanted bailouts handed to water. We clipped the bailouts to ropes at side of the boat, but this was a bad idea, as the clips did not hold in heavy waves. One of the bailouts unclipped in the waves and dropped to the sea. There was an attempt to search it from the bottom, but it was not found.
Me and Leppis went down last. Visibility was OK and it was a nice dive.
After the dive it was a long boat ride back to Otaniemi.
I had my camera with me:
Photos
https://photos.leiman.fi/2019alca
Attendants: me, Leppis, Pekka H, Pekka T, Henri, Liisa, Tommi
Intended 7 divers, but in the end Pekka T skipped the dive.
Intention was to dive Munin wreck, but due to bad weather we decided to dive Alca instead.
Intetion was to leave Otaniemi at 11, and we almost did.
At departure it was quite windy and cloudy.
We decided to drive along the innermost route in shelter of the islands towards east, and then only when approaching the wreck location drive out to the open high seas.
The inner route was quite ok, 1 hour of travel in shelter of the SE wind, but once we got to open sea, the waves were abou meter high and hitting hard. In shelter we could do 22 kts, but in the big waves noyl 12 to 15 kts and heavy banging against waves.
At Söderskär lighthouse we stopped to evaluate sitation and concluded that it was not possible to find and dive Munin in this weather. The sonar would not work in finding the wreck at 55 m depth.
Munin has no fixed buoy.
So fallback was the wreck of Alca just nearby. It had fixed buoy so we could attach Hinkki to it and finding the wreck would not be a problem.
Pekka T. decided not to dive.
Alca was a small steam shiop that sank 28th August 1951. It hit a loose sea mine.
During WW2 thousands of sea mines were laid to the Bay of Finland, and it took years to clear them out.
Several years after the war ships kept hitting loose mines. Even today it is still possible to find sea mines.
The wreck wasn't too badly broken and it stands on its keel.
Teams:
1. Liisa, Tommi, both CCR
2. Pekka H. Henri
3. Ian, Leppis, both on 2x12L TMX 21/35 + 7L 50%
Liisa wanted bailouts handed to water. We clipped the bailouts to ropes at side of the boat, but this was a bad idea, as the clips did not hold in heavy waves. One of the bailouts unclipped in the waves and dropped to the sea. There was an attempt to search it from the bottom, but it was not found.
Me and Leppis went down last. Visibility was OK and it was a nice dive.
After the dive it was a long boat ride back to Otaniemi.
I had my camera with me:
Photos
https://photos.leiman.fi/2019alca
Tanks
Main tank
- Volume
- 7,0 l
- Press. Start
- 190 bar
- Press. End
- 110 bar
- O2%
- 48,0%