Snubbers

Hi all

Looks like we're in for some big winds toward the end of the week so looking at purchasing some snubbers for my mooring lines.

Recommendations? Advice?
Do the simple rubber ones do the trick or are the fancy Dockshockles etc more effective?

Thanks.

Head line, stern line and fore and aft springers is about as good as it gets when you are talking about wind and it often pays not to have them snigged up too short.

The worst thing is if you get a short sharp chop that causes the boat to jerk on it's lines or the marina finger to jerk around.

A stout set of nylon mooring lines are an invalueable assett to have aboard.

Rubber snubbers are great to have on your mackeral trolling line.

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Ramona said..

cisco said..
Head line, stern line and fore and aft springers is about as good as it gets when you are talking about wind and it often pays not to have them snigged up too short.

The worst thing is if you get a short sharp chop that causes the boat to jerk on it's lines or the marina finger to jerk around.

A stout set of nylon mooring lines are an invalueable assett to have aboard.

Rubber snubbers are great to have on your mackeral trolling line.

I would agree with this except for the sizing of the 3 strand nylon. Nylon with take the shock loadings as long as it's sized correctly. The springers need to be small enough to take advantage of the stretch and recovery and thick enough not to overstretch. Calculating the size is the tricky part.

Thanks gentlemen.

Okay....the boat is a Mottle 33 weighs about 4.5. Standard fore and aft mooring cleats. Berth is a standard pen, blow-off side.

Does this information help in calculating rope size? If so, can you advise please?

I weathered a significant blow in the cat at Newport without damage or incident, however, I have moved to a marina in Scarborough which is not as protected.

Going to remove the shade house (yep, I can hear you Ramona) and take the headsail off the furler. Lash the main and the boom bag.
Guess the dinghy is safest where it is on the davits.
Send the ship's mog to family on shore.
Hope it doesn't end up too bad.

Hope everyone else is safe and secure.

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theselkie said..

Guess the dinghy is safest where it is on the davits.

if it's a hard dinghy i would lash it down on the foredeck, or otherwise deflate it.

The only calc I could find when looking at anchor snubbers was 1.3 times boat length of 3 strand.

Diameter(inches) = Displacement (pounds)^0.4 times 0.00832

This led me to an anchor snubber of 8mm which has worked really well.

However, your situation in a berth is different - the number 1 requirement is that the lines don't break - the Whitworths calculator suggests 14mm line and doubling it for a big blow. I reckon these should have enough stretch for your purpose.

You do see a lot of people using old low -stretch halyards etc as dock lines. No shock absorbing and asking for trouble.

Cheers

Bristol

I would suggest good three strand nylon for the stretch, probably 14 mm for your boat backed up with another set of 16 mm (or a second 14 mm) that are a little longer than the others. Should the primary set stretch to the determined limit you then have two sets taking the load.
Whatever you decide, take care and good luck.

Don't stress too much , just put double lines out , take photos and have insurance. I did cyclone yassi and Anthony in able point marina Airlie beach , I had my lines fairly tight and hitched my stack pack main sail bag , and ran hitches up my head sail as far as I could reach. The only loss was a fishing gaff I left in the rod holder.