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Hi psubbers,
Sometimes people ask me how many psubs exist in the
world and if they are like ours, bigger or smaller - if others dive as deep as
we do - (answer: - yes others go much deeper ! )
I my opinion - what matters when answering
questions is to give people a frank - simple explanation - just seeing a psub is
quite a chock to most...so I dont go into safety factors in peacetime vs
wartime ect...or any other nonsense.
On diving depth I tell two data - how deep we
actually do dive, and how deep we have calculated that we expect catastrophic
failure to occur. I typically add that most fun is at less than ten meter to
sort of excuse the fact that our canoes are shallow diving ships - less than
spacecrafts for the abyss...
At our convention in Copenhagen during 2006 some
told people visiting us how deep they did indeed dive, and some how deep they
had calculated that they could dive...giving a sort of misleading
picture...
Sometimes in have been thinking of an A B C D and
so on classification system for Psubs. In this -
an "A" boat would be something like Sgt. Peppers -
one person - electric only. A "B" boat would be like Nemo or K250 / K350 - a two
seat with electric only propulsion. A "C" boat would be a small diesel-electric
boat for two or more people like NR-1 ( Joe´s model ) or like Kraka. Finely a
"D" class boat would be Euronaut, Platypus, or UC3 - big diesel boats with
multi person crews and open sea capacity. Of cause - there is lots of fun in
subdividing this into "DAIP" - for AIP propelled D boats or AH for human
propelled A boats.
All of cause most for fun - and when somebody is
telling you that he is building a ultra light submarine at just 400 kg with
sixty cubic meters volume...and fuel cell propulsion - you can say that that´s
fine - its a DAIP class - that has never been build before...
Its interesting to see that most - almost all psubs
are B class - most likely this is the best for a private individual - and the
very few A,C and D boats exist outside the mind or PC of its owner. In fact -
the only operational D boat ever deployed was a Dutch gastank named "Spurdog"
that with the aid of a bulk of ballast and some tanks could be dived at shallow
water - with a number of people inside. It did not have any means of underwater
propulsion to my knowledge. However - it furfills the difinition - with is 60
ton hull and dieselmotor is must have been seagoing...more or
less...
Just some thoughts...
Have a nice day,
Peter
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