Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 17-10-2014, 05:23   #1
Registered User
 
katsumi's Avatar

Join Date: Feb 2011
Location: Sydney,NSW, Australia
Boat: Lagoon 400
Posts: 153
Lagoon Davits

Just been reading about problems with the Helia and its davits how they are unable to carry a tender at sea. Just wondering how other Lagoon owners are using your davits? I usually have done most of my passages with the tender 3.2 metre rigid inflatable with 15 HP on the davits, never thought it was an issue. Am I wrong? should I be putting the tender up on the forward decks whilst at sea? I do not recall anything in the manual about this.
__________________

__________________
Dream as if you'll live forever. Live as if you'll die today.
- James Dean -
katsumi is offline   Reply With Quote
Old 19-10-2014, 18:46   #2
Registered User

Join Date: Feb 2010
Location: Liveaboard cruiser. Home port Brisbane, Queensland, Australia
Boat: Lagoon 400
Posts: 820
Re: Lagoon Davits

Leaving the tender and motor on the davits on passage doesn't seem to be a problem on a L400. Plenty of clearance so breaking following seas don't hit the dinghy or outboard leg.

Not sure how you would get the RIB and motor onto forward deck anyway.

One owner with a heavy Honda BF20 that I spoke to removed the motor for a long ocean passage and left the tender on the davits. He lashed the motor on the rear starboard deck just forward of the starboard genaker winch. He fitted pad eyes and placed a foam pad down first. You need a gantry or a couple of really strong pairs of arms to accomplish lifting that piece of machinery.

The only issue with having the RIB on the davits is chafe to the hypalon. We use carpet pads and extra tie downs to minimise movement in rough weather. Cheers
__________________

__________________
tuskie is offline   Reply With Quote
Old 23-10-2014, 08:13   #3
Marine Service Provider

Join Date: Sep 2014
Location: LAKKI LEROS ISLAND
Posts: 8
Re: Lagoon Davits

i think that the best thing is to have the tender on the davist when sailing and keep the motor seperetaly in another place t
__________________
CPT NIKOS is offline   Reply With Quote
Old 23-10-2014, 16:10   #4
Senior Cruiser
 
Emerald Sea's Avatar

Cruisers Forum Supporter

Join Date: Feb 2013
Location: Live-aboard Cruiser
Boat: Lagoon 450
Posts: 570
Re: Lagoon Davits

We have a L450 and just recent completed some passaging in rough weather. Without a doubt, the motor (ours is a BF20) must come off and be stored on deck (we have a fitted motor mount). We have left the dingy in the davits, lashed down with 2" cargo straps and secured laterally to prevent all movement, but still in moderate seas the dingy hull will get hit with water. This is not a satisfactory situation, especially in heavier seas, and in the future we will be storing the dingy on the front deck. This is easy enough to accomplish by lifting it with the gennacker/spinnaker halyard (w/o motor of course) and carefully managing it to the deck and then laying it down on a few flat fenders with a good tie down.

During this rough weather passage the Lagoon supplied webbing bridle parted and fortunately it was still supported by the cargo straps but for those hectic itchy hours we could have lost the dingy. I have since replaced the bridles with a s/s chain. In fact I have upgraded all the rigging for the davits including the blocks, shackles, etc.

I am also in the midst of designing and having built a davit arm for lifting the 50kg BF20 and, yes, it's quite heavy and awkward to take off/on with 2 persons. This davit arm will be a temporary installation, one that I can remove when not in use; I don't want to look at an ugly davit arm when enjoying my back deck view during the sundowners.

I would still keep the the dingy w/motor in the davits for local transiting when I'm clear the weather is fine, but passaging, it's off.
__________________
Steve
SV Emerald Sea
L450
Emerald Sea is offline   Reply With Quote
Old 24-10-2014, 10:36   #5
Registered User
 
cashgar's Avatar

Join Date: Nov 2009
Location: Canada
Boat: Lagoon 410
Posts: 72
Re: Lagoon Davits

Quote:
Originally Posted by katsumi View Post
Just been reading about problems with the Helia and its davits how they are unable to carry a tender at sea. Just wondering how other Lagoon owners are using your davits? I usually have done most of my passages with the tender 3.2 metre rigid inflatable with 15 HP on the davits, never thought it was an issue. Am I wrong? should I be putting the tender up on the forward decks whilst at sea? I do not recall anything in the manual about this.

I have a 410 did my last passage abacos to BVI with the dingy on the davits the motor 15hp was secure in the front locker but next time the dingy will be back on deck as usually.
got some heavy sea and wind 30 to 40 kn the dingy as bin lightly hit few times just didn't like it at all.

__________________
cashgar is offline   Reply With Quote
Old 31-10-2014, 03:54   #6
Registered User
 
DavefromNZ's Avatar

Join Date: Sep 2011
Location: NZ
Boat: Lagoon 450
Posts: 389
Lagoon Davits

Hi Emerald,

I spent a lot of time figuring out our L450 attachments to get the dinghy fully up to press into to davits. I had two 1 inch stainless bars made to achieve this, nothing else worked, and the straps used to rub and fray. With the dinghy fully up and the Honda 20 rotated up two clicks, it misses the waves and cannot move. I do also put an extra strap,at each end and under the dinghy, on ocean travels in case a lifting line breaks;

Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1414748969.784945.jpg
Views:	302
Size:	209.1 KB
ID:	90587
Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1414749025.286182.jpg
Views:	365
Size:	241.4 KB
ID:	90588



Sent from my iPad using Cruisers Sailing Forum
__________________
DavefromNZ is offline   Reply With Quote
Old 31-10-2014, 16:57   #7
Senior Cruiser
 
Emerald Sea's Avatar

Cruisers Forum Supporter

Join Date: Feb 2013
Location: Live-aboard Cruiser
Boat: Lagoon 450
Posts: 570
Re: Lagoon Davits

Dave,

I did saw your photos on an earlier post or somewhere (?) and made a mental note of them. Actually I was thinking of these when I replaced the webers with the chains however I was at Redang Island without any fab or machine shop and needed an urgent fix and had the chain and a pair of cutters handy on board. The only drawback is not getting the dingy to sit snug to the davit bars. I have had since added a set of 2" s/s ratchets delivered with HD cargo straps and use the two in unison....for coastal cruising.

I'm still going with a retrofit/removable davit frame for the o/b lift and storage that I'm presently designing and will have made at a machine yard in Thailand. And removal of the dingy for crossings.

After experiencing our boat in strong gales with the dingy and motor attached, I've became very concerned with the acceleration loads acting on the davit frames. I originally thought they'd add no more than 30% of the base weight but now believe this to be greater compounded by the motor base and/or dingy hull contacting the water. Removing only the motor reduces the self weight of the system by some 40% and certainly helps but I'm erring on the safe side and removing both for main crossings.

Steve


Steve
L450
SV Emerald Sea
__________________
Steve
SV Emerald Sea
L450
Emerald Sea is offline   Reply With Quote
Old 21-08-2017, 04:00   #8
Senior Cruiser

Cruisers Forum Supporter

Join Date: Feb 2016
Location: Afloat - Mediteranean
Boat: Lagoon 450 F
Posts: 204
Re: Lagoon Davits

Old thread revival....


Dave and Steve . Can you update on how your davit system is now, what works and dosn't etc please ?

I'm in the midst of rigging our brand new Highfield 360-FCT, and getting it tight up is proving a challenge....

I have the additional issues that the FCT console creates a side load, so the center of lift is a bit stbd of the centerline of the dinghy. (otherwise it tends to tip when lowering !).

Dave: On your steel bars, they are at each end and therefore would not line up with the davits straight. Does this cause you any issues with the lines running out of the davit sheeves at angles ?

Any thoughts appreciated.

Regards

Mark.
__________________
Catapault is offline   Reply With Quote
Old 26-08-2017, 09:02   #9
Senior Cruiser
 
Emerald Sea's Avatar

Cruisers Forum Supporter

Join Date: Feb 2013
Location: Live-aboard Cruiser
Boat: Lagoon 450
Posts: 570
Lagoon Davits

Mark. We have the original Lagoon davits and the Highfield OM350. It fits in the envelope but without much spare. So I can imagine going larger creates some issues. Have you tried counterbalancing the console with having your fuel tank, battery and other apparatus on the port side?

Our davit lines exit at about 5 degrees and will chafe over time. What I do is when I notice chafe on the protective outer core of the line occurring, cut back 10-20cm of the line from the sheave/purchase end and re-knot it. In practice you have shifted the chafed area and the rubbing will begin at a new area. Eventually you will run out of line but this is more efficient and cheaper than replacing the line each time you chafe.Click image for larger version

Name:	IMG_2965.jpg
Views:	92
Size:	420.2 KB
ID:	154836Click image for larger version

Name:	IMG_2966.jpg
Views:	94
Size:	422.8 KB
ID:	154837Click image for larger version

Name:	IMG_2967.jpg
Views:	90
Size:	414.1 KB
ID:	154838
__________________
Steve
SV Emerald Sea
L450
Emerald Sea is offline   Reply With Quote
Old 05-09-2017, 01:32   #10
Registered User

Join Date: Oct 2010
Location: Australia
Boat: TBA
Posts: 295
Re: Lagoon Davits

I saw a good design recently in Singapore where the lifting bar was a t shape which attached to the bow lifting point vertically ( or nearly) also to the transom points (2 off) nearly vertical, then he picked up the lifting bar vertically preventing most of the chaff or fraying he also placed a web rachet over the top of the davits and down to the lifting bar to help prevent loss if something broke, it was all constructed from a bout 25 - 32 mm stainless and was rarely removed from the davit lines and looked ok hanging when his dinghy was in the water.

He had a consul boat and this lifting bar was simply bent over the consul, with only a little clearance, he said that he always attached it to the bow first then lowered it to hook onto the transom before stepping off the dinghy to prevent any damage from the bar hitting the consul etc, I thought it could have been left in the dinghy most of the time with a few modifications . he said he got the idea from a super yacht which craned all its tenders on and off his dinghy was an alloy base he said his mate with a glass base moved his lifting points to suit his davits and used a small bar similar to what is used in the photo above
__________________

__________________
aclmck is offline   Reply With Quote
Reply

Tags
davits, lagoon

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
Lagoon 380 owners Vs. Lagoon 41 Standard chad.lawie Multihull Sailboats 45 07-01-2015 07:06
Looking to Buy a Used Lagoon 38 or Lagoon 41 DiAnn Multihull Sailboats 0 12-04-2005 10:22
Venezuela or Offshore - Custom Bimini / Davits Strygaldwir Marinas 3 22-02-2005 16:42
Can you hang an Airfloor Dink from Davits? exposure General Sailing Forum 9 02-02-2005 05:44
Davits & Boat Lifts GordMay Construction, Maintenance & Refit 0 17-05-2004 05:12



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 20:15.


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.