Seaworthiness

IDEA :idea:

Put the motor in slow astern

this will assist to get some slack on the line

feed it in - dont stop half way

the storm is supposed to be over anyway

 

but remember let it go when it gets into prop

 

Something I've found on retrieving a series drogue:
http://jordanseriesdrogue.com/D_6.htm
http://www.morganscloud.com/aacblog/2008/05/heavy-weather-yet-more-on-series-drogue.html
Deploying the drogue and retrieving a series drogue (Video)

I have not find any reference to any kind of a 'packing up' system like the one TeddyDiver mentions. A pity, as it sound a very interesting one if it really works!

Cheers.

 

I'm not talking about the roll damping effect of the cabin and wheelhouse, but it's buoyancy when submerged, equivalent to a huge amount of extra ballast..
Brent

 

I would think that whatever method is used to recover the series drogue, some sort of roller fairlead would make things alot easier to ease the drogues and line over the stern.
The recovery over the bow sounds good, so long as nothing gets fouled up on the anchor fairlead. OK if you have a drum end on the windlass, my boat does not.

All the best

Nigel

 

What do you think of this idea? They claim improved directional stability, seakeeping abilities and seaworthiness.

http://www.haberyachts.com/techniczne/hb_c4_A.pdf

Cheers.

 

Interesting link, Guillermo. Although the multiple-boards system looks a bit clumsy, it's not hard to see how it could be useful. By adjusting which foils are in the water and by how much, one should be able to get the boat to balance properly with just about any reasonable combination of sails.

 

Wouldn't it be easier to, from the start; take a hull form more suitable for cruising etc than trying to stack a piles of dingel dangel around making the boat look like a porcupine..

 

Guillermo
A very tender shallow draft boat completely reliant on the large windowed deck house for its ultimate stability. The same item that gives it a higher COG in the first place.
Multiple centreboards are nothing new either, Maclear and Harris experimented with all sorts of configuarations and found that two inline boards were the best compromise for all round balance and control.

cheers

 

Works for the RNLI. There's nothing wrong with it as a technique.

BUT, the problem with recreational boats is there are no standards to be considered for the construction of the superstructure if it is to be relied upon in this way. A worse example is the new Moody 4DS that claims to have a AVS of 180, based entirely on immersed integrity of the sliding 'patio doors' that separate the deck saloon from the cockpit. If Moody's structure is adequate, then the RNLI is scandalously wasting the public's voluntary contributions, by overbuilding their boats.

 

I don't think so.

 

Which brings to my mind the question about immersed watertighness issue and how its defined and judged in the ISO11812.. So whats the watertightness test for degree 1 ? Maybe the same test with 0 leakage?

 

Crag
RNLI boats aren't carrying sail. That stability curve is abysmal and it shifts down considerably with a few people aboard. The dellenbaugh angle is going to be shocking.

The RNLI boats we ended up with here have full fore-n-aft WT bulkheads and doors from the wheelhouse which was quite small.

 

Most likely a pressure hose test.

 

Hi Crag, a lot of time since we don't meet at these forums.
You're right. Unluckily not only the Moody but several other sailing boats with sliding doors are A categorized. I'm wondering which authority is watching what is happening in the market, watching what Notified Bodies do. It seems national maritime authorities only audit things when a disaster happens. I do not like at all leaving inspections and decissions only in the hands of the NBs, which are paid by the manufacturers and have to commercially compete to get and keep clients. It is very easy to become 'condescending'.
Cheers.