[PSUBS-MAILIST] G.L. Propulsion & Manoeuvring Equipment

[Alan James]

Hi Havard,
I'm in New Zealand,  G.L. is based in Hamburg, Germany. 
We have a member in Rostock, Germany, Carsten, who overseas certification for Swiss Lloyds, which focuses on smaller submersibles.
Most home builders wouldn't build to classification standard. But the rules are there for a reason & there are some good safety guidelines that can be found in them.
Alan
 



________________________________
 From: Håvard Hardy <haavard.hardy at gmail.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Monday, January 20, 2014 11:41 PM
Subject: Re: [PSUBS-MAILIST] G.L. Propulsion & Manoeuvring Equipment
 


Ahh okey! :)

only 5 mil people in Norway, havent found anyone that have buildt a sub here befor, think i am the first one! havent found any rules or classification & certification here in norway. so i am going after the ones you have inn Usa. 



2014/1/20 Alan James <alanlindsayjames at yahoo.com>

Hi Havard,
>I'm going through the Germanic Lloyds rules for classification & certification of submersibles & 
>summarizing it for people that may be interested. Most of the group come from the U.S.A where
>they have the American Bureau of Shipping as the main submersible classifyer.
>Alan
>
>
>
>________________________________
> From: Håvard Hardy <haavard.hardy at gmail.com>
>To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
>Sent: Monday, January 20, 2014 9:05 PM
>Subject: Re: [PSUBS-MAILIST] G.L. Propulsion & Manoeuvring Equipment
> 
>
>
>sorry, have to ask.. G.L rules?
>
>
>
>2014/1/20 Alan James <alanlindsayjames at yahoo.com>
>
>This is section 10 of 15. We are slowly getting there.
>>   In addition to the following rules, the propulsion & steering systems are  subject to G.L. rules for
>>machinery installations & the rudders to G.L. rules on hull structures.
>>   The motors are to be designed to be used continuously.
>>   Propellers need shielding.
>>   Electronic motor controllers shouldn't fail so the motor continues running, & the motors need to 
>>be capable of manual control.
>>   The propulsion equipment needs to be fitted with indicators & alarms to guarantee safe operation.
>>   Effective reverse thrust for braking has to be provided.
>>   The stress in the rudder stock can't exceed .5 of the yield stress.
>>   Independent submersibles (operated off shore without support ship), need to be equipped with
>>auxiliary steering gear (bit foggy about what this means)
>>   The steering gear needs to be able to move the rudder from 35 degrees one side to 30 degrees the other
>>within 28 seconds (how's that for nit picking)
>>   If horizontal rudders are a necessity on your sub, they need to have an alternative power supply that can
>>be operated from the control stand. The "slewing" movements of motors used for maneuvering are also subject
>>to the above requirement.
>>   There needs to be rudder position indicators & indicators to signal any failure of the steering gear.
>>   There are rules for dynamic positioning that are required for some operations, but probably don't concern us
>>& their equipment is examined on a case by case basis.
>>Regards Alan
>>
>>
>>
>>
>> 
>>
>>
>> 
>>   
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>
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