Monday, June 6, 2011

Re: [Electric Boats] Re: Siandra unplugged

 

Hybrid is not re-gen.  Nothing like stating the obvious. Hybrid is not limited to diesel. Nothing like stating the obvious. Having a genset on-board could be described as Hybrid or not.

Many boats are rescued, or holed and allowed to sink, after picking up the occupants. Those skippers that set records either racing or circumnavigating with limited time take more chances than those that wait for the proper season and stay well away from the 50's while under way. If they take away as many hazards, i.e. weather patterns dependent on season. Only taking small chances, they can likely travel without extremes such as pitch polling. 

The planet is big and the puddle seems very large even in a 100ft boat.  Leaving port is taking chances. But learning to predict weather using weather charts reduce much of the risk.  As I said the more time you spend on a passage the more you risk being caught at sea rather than in port safe from high seas and heavy winds.  A dino genset keeps the lights on and charges batteries.  My view on regen has nothing to do with the use of dino and everything to to with a design that has failed to produce as promised.

One more point:  If I had been dis-masted I would not be relying on regen to get me in. Gas, Diesel, Bio, or other renewables on board would most likely get me in unless I had enough left to gerry rig a sail. Barring any of the above an emergency beacon would be the best approach.  When the sun sets, if the prop is driven by an electric motor, it will be the most reliable of any other drive option.

Kevin Pemberton

On 06/04/2011 06:53 PM, Rob Johnson wrote:



From: Rob Johnson <dopeydriver@yahoo.com.au>
To: electricboats@yahoogroups.com
Sent: Friday, June 3, 2011 9:02:26 PM
Subject: Re: [Electric Boats] Re: Siandra unplugged

 
Kevin , when talking about serious ocean going , then you have to consider all possibilities , its not always possible to hide from bad weather.
About this time last year , a Czech was getting well in to the last leg of a solo circumnavigation , from NZ to NZ.
He was in the Southern ocean , 800 or so NM south of here , when he was hit by a storm , of a severity that he had never experienced before.
After 3 days , his boat pitch poled , breaking the mast , and clearing the deck , including his life raft.
He had to stay below for another 2 days , before the weather abated enough for him to come up , and survey the damage.
He had a boom left , he made up a little jury rig , and there was a fair amount of diesel in his tank , so , over the next few weeks , he slowly made it to Portland , Australia , motoring , motorsailing.
Tell me how he could have made it back here , by electric power.
The only way I can see is by using a serial , or parallel diesel hybrid , installed in the boat.
There is a lot to dislike about diesel , but the reality is its hard to beat , when the chips are down.
Regards Rob J.



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