Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 23-01-2016, 11:28   #1
Registered User
 
CookiesnTequila's Avatar

Join Date: Sep 2012
Location: Cruising the Med
Boat: Catana 50
Posts: 145
Med Mooring in heavy surge

I'm sure this topic must have been discussed on here somewhere, but I can't seem to find it!

We are relatively new to Med Mooring (living aboard a Catana 50 Cat for 1 year) and am just experiencing our first fairly uncomfortable surge conditions. We are moored stern to a concrete pier and have the luxury of 4 lead lines (because we have two spots). The problem is the surge coming in is causing a forward and backward motion which occasionally has us jerk fairly hard when the lines tied to the pier snub up from a particularly large surge.

There is very little tide (in Crete).

My question is: Is it better to make the lines very tight, or leave it room to move?

Thanks
__________________

__________________
CookiesnTequila is offline   Reply With Quote
Old 23-01-2016, 11:59   #2
Registered User
 
Hoofsmit's Avatar

Join Date: Jul 2013
Location: cornwall uk
Posts: 569
Re: Med Mooring in heavy surge

http://newcontent.westmarine.com/con...l/11160652.jpg

That's what these are for



Sent from my iPad.......i apologise for the auto corrects !!!
__________________

__________________
Hoofsmit is offline   Reply With Quote
Old 23-01-2016, 12:16   #3
Freelance Delivery Skipper..
 
boatman61's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2010
Location: UK/Portugal
Posts: 20,189
Images: 2
Send a message via Skype™ to boatman61
pirate Re: Med Mooring in heavy surge

Quote:
Originally Posted by CookiesnTequila View Post
I'm sure this topic must have been discussed on here somewhere, but I can't seem to find it!

We are relatively new to Med Mooring (living aboard a Catana 50 Cat for 1 year) and am just experiencing our first fairly uncomfortable surge conditions. We are moored stern to a concrete pier and have the luxury of 4 lead lines (because we have two spots). The problem is the surge coming in is causing a forward and backward motion which occasionally has us jerk fairly hard when the lines tied to the pier snub up from a particularly large surge.

There is very little tide (in Crete).

My question is: Is it better to make the lines very tight, or leave it room to move?

Thanks
Have your stern lines slack enough for her to ride the surge and set up an extra line to pull you in to step ashore or have visitors
__________________


Born To Be Wild
boatman61 is online now   Reply With Quote
Old 23-01-2016, 12:40   #4
Registered User

Join Date: Dec 2014
Location: the Med
Boat: Nauta 54' by Scott Kaufman/S&S - 1989
Posts: 1,059
Images: 3
Re: Med Mooring in heavy surge

I had similar problems in a harbour with strong streams along the dock, some waves in, and possibly a slack chain.

Adding line to lines, very tightly so, didn't work at all, even using lines from midship, X -crossed lines etc.

It worked better loosing that all and keeping the stern 8' afar from cement dock (that wall is the damned thing!)
__________________
TheThunderbird is online now   Reply With Quote
Old 23-01-2016, 13:51   #5
Registered User
 
wrwakefield's Avatar

Join Date: Feb 2011
Location: Wrangell Island, Alaska
Boat: Nauticat 43
Posts: 861
Re: Med Mooring in heavy surge

CookiesnTequila,

I have a couple more considerations for you in addition to the good advice you have already received:

1) If you are using your bow anchor with all chain rode and don't already have a bridle, make sure you install an appropriate length stretchable bridle [e.g., nylon 3 strand...] on the chain so you aren't putting those surge loads on the anchor... [I'm sure you don't want the quay moving toward you...]

2) If you don't already have springs or rubber snubbers on your stern ties, and if they are double-braid, consider replacing them with 3-strand nylon as well.

To increase stretch [and strength] in times past I have had success tightly twisting two lengths of 3-strand nylon for each tie. That improves strength and give you a quick way to add some stretch if you have no alternatives at the moment... [One method is to secure the middle of a long enough length of 3-strand to the quay, then lead the 2 bitter ends to the boat. Twist the two secured lines together from the boat as tight as you can and cleat it off as a single line. Repeat for the other shore ties.]

I suspect these may all be things you already do, but I mention them just in case and for future readers to consider...

It sounds like it is not an ideal day for baking that soufflé... I hope it ends soon for you...

Cheers!

-Bill
__________________
SV Denali Rose

Short on opinions; focused on research, facts & experience [yours and ours...]
wrwakefield is offline   Reply With Quote
Old 23-01-2016, 14:15   #6
Registered User
 
CookiesnTequila's Avatar

Join Date: Sep 2012
Location: Cruising the Med
Boat: Catana 50
Posts: 145
Re: Med Mooring in heavy surge

Quote:
Originally Posted by boatman61 View Post
Have your stern lines slack enough for her to ride the surge and set up an extra line to pull you in to step ashore or have visitors
So do you make them as tight as possible, but just enough to ride the surge?
__________________
CookiesnTequila is offline   Reply With Quote
Old 23-01-2016, 14:24   #7
Registered User
 
CookiesnTequila's Avatar

Join Date: Sep 2012
Location: Cruising the Med
Boat: Catana 50
Posts: 145
Re: Med Mooring in heavy surge

Thanks - I purchased 4 brand new 12mm galvanized springs - one broke this morning, making a not too bad damage on the hull! I have the rubber ones (as shown above) I took the steel springs off and used a length of 24mm 3 strand nylon made into a triple loop over each of the 4 bollards, and then tied all of our lines (2 straight back) two crossed back and two midship springs back and loop tied them all to the rope loops over the bollards.

I am confident they will be okay, and have as much spring as I can get in rope - but we are still jerking quite hard occasionally - I think I will try tightening so we don't move as much....
__________________
CookiesnTequila is offline   Reply With Quote
Old 23-01-2016, 14:26   #8
Registered User
 
CookiesnTequila's Avatar

Join Date: Sep 2012
Location: Cruising the Med
Boat: Catana 50
Posts: 145
Re: Med Mooring in heavy surge

Quote:
Originally Posted by CookiesnTequila View Post
...hull! I have the rubber ones (as shown above)
Sorry - I have 2 rubber ones - one on each midship spring
__________________
CookiesnTequila is offline   Reply With Quote
Old 23-01-2016, 14:32   #9
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Whangaparaoa,NZ
Boat: 63 ft John Spencer Schooner
Posts: 956
Re: Med Mooring in heavy surge

Move.
__________________

dana-tenacity is offline   Reply With Quote
Old 23-01-2016, 14:51   #10
Registered User
 
CookiesnTequila's Avatar

Join Date: Sep 2012
Location: Cruising the Med
Boat: Catana 50
Posts: 145
Re: Med Mooring in heavy surge

I feel very silly!

20 minutes snugging lines (should have gone with my first instinct instead of listening to others!) and we are riding quieter than we have all day!

The answer certainly seems to be as tight as possible - just room to lift with the swells.

Thank you all! I may actually be able to sleep tonight!
__________________
CookiesnTequila is offline   Reply With Quote
Old 23-01-2016, 15:40   #11
Marine Service Provider

Join Date: Dec 2009
Location: St Augustine, FL
Boat: Woods Vardo 34 Cat
Posts: 2,825
Re: Med Mooring in heavy surge

I would run some long spring lines to the bow 5/8" rigged so they stretch a good bit before the stern lines take up tight.
__________________
Check out my MoJo: Facebook.com/mojomarine1
Boatguy30 is offline   Reply With Quote
Old 24-01-2016, 08:32   #12
Marine Service Provider

Join Date: Feb 2012
Location: Vienna, Austria
Boat: Vagabond 47
Posts: 216
Re: Med Mooring in heavy surge

Quote:
Originally Posted by CookiesnTequila View Post
I feel very silly!

20 minutes snugging lines (should have gone with my first instinct instead of listening to others!) and we are riding quieter than we have all day!

The answer certainly seems to be as tight as possible - just room to lift with the swells.

Thank you all! I may actually be able to sleep tonight!
Well unfortunately not as the lines and claps will be noisy.
__________________
moseriw is offline   Reply With Quote
Old 24-01-2016, 09:04   #13
Registered User
 
bobnlesley's Avatar

Join Date: Jul 2008
Location: Yorkshire/Back down in da islans Mon
Boat: Trident Challenger- 35 feet
Posts: 369
Re: Med Mooring in heavy surge

I'm with Dana-Tenacity: Just move.

Throughout seven years cruising in the Med. it never ceased to amaze me how otherwise sensible-seeming people happily chose to anchor/moor their boats off a quay in an onshore wind, particularly a strong one; you're voluntarily putting your boat only 3-6' off a lee shore FFS!

We once sat (anchored off) in Vathi Bay on Ithaca watching the floor show during a well forecasted 30+ knot blow: It was high season, the quay was packed and all the boats on the quay were bouncing, with skippers/crews frantically racing around fending them off the wall and each other. About once every 15-20 minutes one of them would finally concede defeat, drop their shorelines and motor away, some to join the fleet of comfortably (in a relative sense) free-anchored boats and others leaving to try their luck elsewhere. What we found most non-sensical however, was that whenever a boat left the quay, one of those anchored-off - who'd had an equally good view of the antics on the quay as we had - would immediately lift their anchor, crash/bang their way onto the quay and see if they could do any better; none of them did.
__________________
bobnlesley is offline   Reply With Quote
Old 24-01-2016, 09:59   #14
Registered User
 
stillbuilding's Avatar

Join Date: Jan 2008
Location: Hong Kong
Boat: Custom Freya 20m
Posts: 961
Re: Med Mooring in heavy surge

Waste of time and effort. Get out of there!


Sent from my iPhone using Cruisers Sailing Forums lily hhrn
__________________
stillbuilding is offline   Reply With Quote
Old 24-01-2016, 10:20   #15
Registered User
 
vtomanov's Avatar

Join Date: Jan 2016
Location: UK , London
Boat: Jeanneau Sun Liberty 34
Posts: 197
Re: Med Mooring in heavy surge

as other say - JUST MOVE - better of on anchor then hitting the concrete.. I have number of nights in my life that I was too lazy to move and next day seriously regretting it...

in general you need to have the anchor VERY WELL IN - leave about 3-4 meters at least between stern and concrete and two old car tyres in the middle of the lines e.g. one line shore to tyre and one tyre cleat - should have plenty of old tyres in Greece on shore
__________________

__________________
vtomanov is offline   Reply With Quote
Reply

Tags
mooring

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Life aboard and Dealing with heavy weather on hook or mooring mischief Liveaboard's Forum 13 30-09-2013 09:48
Sea Surge Artful Dodger Liveaboard's Forum 10 14-02-2010 14:53
Generator and Power Surge Protector Won’t Play Together Dream Maker Electrical: Batteries, Generators & Solar 3 10-07-2008 11:46
Surge in cyclones (QSLD) predicted for next month micoverde Pacific & South China Sea 12 31-12-2007 18:29



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 14:48.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.