Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 29-12-2012, 15:52   #1
Registered User

Join Date: Sep 2012
Location: Bribie Isl then permanently cruising from Feb 2013
Boat: 2006 Lagoon 440
Posts: 104
Using L440 boom as crane?

Has anyone had experience with using an extension to the boom to lift something on and off a platform above the davits at the stern of a Lagoon 440? I have an object that will weigh in the order of 220kg but will need to be swung out to either the Port or Starboard side to be lowered in to the water. It only needs to be raised about 300mm to clear it's cradle, and slewing the boom may require disconnecting the traveller briefly to get sufficient slew. I'm sure it will be well within load limits for the boom, but interested if any one has done the same.
coldar1 is offline   Reply With Quote
Old 29-12-2012, 16:08   #2
capngeo's Avatar

Cruisers Forum Supporter

Join Date: Jul 2010
Location: Key West & Sarasota
Boat: Cal 28 "Happy Days"
Posts: 4,211
Images: 12
Send a message via Yahoo to capngeo Send a message via Skype™ to capngeo
Re: Using L440 boom as crane?

Different application, but I've lifted a LOT of diesels out of monos with the boom!
Any fool with a big enough checkbook can BUY a boat; it takes a SPECIAL type of fool to build his own! -Capngeo
capngeo is offline   Reply With Quote
Old 29-12-2012, 19:07   #3
Registered User
sww914's Avatar

Join Date: May 2009
Location: Punta De Mita
Boat: Vagabond 39 Hull # 1
Posts: 1,842
Re: Using L440 boom as crane?

I lifted my engine out with the boom, no problem and it was an 800 pounder. You must engineer your rig so that the only load on the boom is compression, pushing it towards the mast, so run a couple of halyards out to the point that you intend to load up and secure them there. If you support one spot and load another you'll bend or break your boom.
sww914 is offline   Reply With Quote

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

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 04:04.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.