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Re: [PSUBS-MAILIST] Hull Penetration and Reinforcement
Thanks Jon,
Will confidently copy the K250 hatch when I get my dome.
It's now 10 & 1/2 months since I put my order in from a local manufacturer.
I inquired on a dome price from Blanson recently, asking if they had a mold
in the
range of my size requirement ( to cut costs ). Yes they did, & it will only
cost me 7,500 to 8,500 pounds for a 26", 5/8" thick dome.
That's round $16,000 NZ. Originally I told Hugh my budget for the whole
submarine was $5000-. That's a bit of a joke.
Alan
----- Original Message -----
From: "Jon Wallace" <jonw@psubs.org>
To: <personal_submersibles@psubs.org>
Sent: Monday, April 05, 2010 12:18 PM
Subject: Re: [PSUBS-MAILIST] Hull Penetration and Reinforcement
Alan,
I have copies of K250 hull #106 certification by ABS (1970), and K350 by
Lloyds Register of Shipping (1980), that George sent me a number of years
ago. So both designs were certified in their time. I checked the 2010
rules for penetration reinforcement against the 2002 rules and the
formulas/text were identical. I believe Cliff designed the hull
calculator spreadsheet from the 2002 rules. According to the spread
sheet, Kittredge's hull construction is still more than adequate for the
operating limits he advertised them at, including a 2:1 safety margin. In
terms of hull penetrations, the plan specs could be used to run through
the various 2010 formulas to determine their adequacy given todays rules.
Jon
Alan James wrote:
Hi,
I'm wondering wether the K250 / 350 plans meet ABS specifications as far
as hull
construction is concerned. I have a diagram of the K250 dome / hatch
construction, wich I'm
looking at using as a guidline. Sorry to hear about the calculation stuff
up Frank. I think thats pretty
much parr for the course when attempting something new, especially when
you're thinking outside
the box like you are, things never seems to go smoothly.
Regards Alan
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