handy cap crane mounting

[oldbouy]

Hello , I just purchased a 1991 Bayliner 2655 ceirra sunbridge , my wife is handicapped , I want to install a handicap crane to move her from dock to boat and boat to dock . I have the crane , it has a 9 inch square base with 1/2 inch thick steel base , capable of lifting 3000 pounds . she weighs 200 pounds . it sounds like overkill , what happens , as the lifting arm is extended to full length , the lifting capacity drops down to 350 pounds . I was looking at the starboard side just behind the bulkhead or on the swim step next to the bulkhead . Is the boat strong enough to support a handicap crane ?. any ideas on how to fasten the crane to the boat ? under neath supports ? side supports ? we are in our senior years and would like to do boating together . thank you for any replies .

 

[alldodge]

Welcome
I moved your thread so it will get more views

I don't see the crane being able to be mounted on your boat and have enough structure to be able to support the load. You would need to stretch out the 9 inch plate to at least 4 foot and maybe a bit more

 

[Grub54891]

One of our fellow boaters installed one on his boat to get his wife in. Not sure how he did it but it worked. If I ever see him again I'll inquire. He is hauled out and he is gone for the winter to places unknown....

 

[airshot]

When lifting/ carrying a person, you can't be to safe. I would expect that any type of human lift would be required to attach to the stringers or main frame of your boat. Decks and swim platforms are not considered the main frame structure. Lots of leverage being utilized when that arm is extended out !!

 

[Captain Caveman]

I don't know if you are always leaving from a dock at your home, so I'll just suggest mounting the crane to your dock instead of the boat. I'm sure that limits flexibility, but it sure is a lot easier than mounting a crane to a boat that was never intended to support such a device.

 

[JASinIL2006]

I'd think the swim platform would be your best bet, but you would probably need to fiberglass in some kind of large backing plate underneath to distribute the load. I'm no engineer, but it would probably be good to find someone who could calculate the load exerted by the base when you have a 200 lb person suspended from the arm at full extension.

 

[Scott Danforth]

Hello , I just purchased a 1991 Bayliner 2655 ceirra sunbridge ...... Is the boat strong enough to support a handicap crane ?.

I spent many years doing marine lifting equipment and SOLAS cranes.

First, your 1991 Bayliner should be checked for structural soundness . Bayliners of the 90s are prone to structural rot.

Second, any crane will need a standpipe from the deck to the hull to take the loading. For a 350# rating (flat out) that standpipe is probably 3" diameter, 3/8 wall pipe with a flange at the deck, and one at the bottom of the hull

Third, to be legal, the crane needs to be rated to carry people. This means that the crane must be certified and listed with GL, Lloyd's of London or any of the other regulating bodies, and inspected frequently. Part of the certification process is a 220% load while flat out, with a 20% heel and a 10% trim. The materials that go into the crane must have MTRs (Material Test Reports) and be welded by AWS certified welders.

This includes the standpipe or plinth

Having designed many personel rated davits and cranes for yachts, adding the ability to handle people doubled the price.

You would be best served to modify the boat by building an extended swim platform, adding ADA compliant hand rails, and an ADA compliant folding ramp (36" wide, with hand rails). These ramps and gangways are reasonably priced and readily available

This gets the wife onboard

You will need further modifications to the aft bustle area of the boat to get her onboard.

 

[oldbouy]

I don't know if you are always leaving from a dock at your home, so I'll just suggest mounting the crane to your dock instead of the boat. I'm sure that limits flexibility, but it sure is a lot easier than mounting a crane to a boat that was never intended to support such a device.

we live in the Washington state Puget sound , we multiple areas for boating with docks and overnight mooreage . that is why the handicap crane would be on the boat

 

[oldbouy]

I spent many years doing marine lifting equipment and SOLAS cranes.

First, your 1991 Bayliner should be checked for structural soundness . Bayliners of the 90s are prone to structural rot.

Second, any crane will need a standpipe from the deck to the hull to take the loading. For a 350# rating (flat out) that standpipe is probably 3" diameter, 3/8 wall pipe with a flange at the deck, and one at the bottom of the hull

Third, to be legal, the crane needs to be rated to carry people. This means that the crane must be certified and listed with GL, Lloyd's of London or any of the other regulating bodies, and inspected frequently. Part of the certification process is a 220% load while flat out, with a 20% heel and a 10% trim. The materials that go into the crane must have MTRs (Material Test Reports) and be welded by AWS certified welders.

This includes the standpipe or plinth

Having designed many personel rated davits and cranes for yachts, adding the ability to handle people doubled the price.

You would be best served to modify the boat by building an extended swim platform, adding ADA compliant hand rails, and an ADA compliant folding ramp (36" wide, with hand rails). These ramps and gangways are reasonably priced and readily available

This gets the wife onboard

You will need further modifications to the aft bustle area of the boat to get her onboard.

yes the crane is classified as handy cap . the boat has been very well maintained no structural concerns . the ramp would not work in our needs . I would like to find out if this crane and boat are compatible and how exactly to brace and mount this crane .

 

[airshot]

To get any type of approval from you're insurance co. you will probably need some type of engineering approval on mounting to your boat. Keep in mind, without some type of qualified approval, any accident might be considered negligence without some documentation. Good luck ....

 

[jbcurt00]

Add a davits for a dingy as well

8 to 10 Dinghy

I have a 8 foot wide trailerable Bayliner 2655 sunbridge , I would like to attach davits for a 10 foot long Livingston dinghy when underway on plane about 25 to 30 knots .

forums.iboats.com

 

[Scott Danforth]

yes the crane is classified as handy cap .

Not on a boat