Question about O’Day Mariner bridle

[klark27]

I have a Oday mariner and my lifting bridle is starting to get old and am looking to replace it. What just wondering if anyone is able to find dimensions on what works (will also take recommendations on what rope to chose).

thank you to all

 

[dLj]

I have a Oday mariner and my bridle is starting to get old and am looking to replace it. What just wondering if anyone is able to find dimensions on what works (will also take recommendations on what rope to chose).

thank you to all

Are asking about an anchoring bridle? Mooring bridle?

In any case, you have a 19 foot boat that is 7 feet wide. ABYC H-40 "Anchoring, Mooring, and strong points" gives that boat a design load of 1080 lbs. That translates to 5/8" Nylon rode to make your bridle from. Length will depend upon what you are doing - mooring bridle or anchoring bridle.

dj

 

[klark27]

Are asking about an anchoring bridle? Mooring bridle?

In any case, you have a 19 foot boat that is 7 feet wide. ABYC H-40 "Anchoring, Mooring, and strong points" gives that boat a design load of 1080 lbs. That translates to 5/8" Nylon rode to make your bridle from. Length will depend upon what you are doing - mooring bridle or anchoring bridle.

dj

I am referring to a Lifting bridle

 

[rgranger]

What are you lifting?

 

[dLj]

We need more details.

dj

 

[klark27]

I am lifting my Oday mariner (my current bridle has two pieces of longer rope that loop on the aft cleats and then two clamps that attach to two shackles right where the side stays meet the hull)

 

[dLj]

So you need to pick up roughly 1500 pounds - the weight of your boat - is that correct?

As it's a lifting line, you could use almost any type line: dyneema, nylon, polyester - whatever. You may prefer a lower stretch line. Typically you use a line rated for about double you lifting weight. As you can't be certain each lifting point loading, I'd design each connection point to handle the full load. Using a generous safety margin, you could use 6 mm dyneema for your lines. But you would need to make certain of your connections strength and the design strength of line - different dyneema manufacturers may have different load values.

dj

 

[LLoyd B]

So you have a permanent bridle that is used to take your mariner on and off the trailer when launching and pulling your boat out of the water that has nothing whatsoever to do with anchoring your boat when not sailing? Also might help to mention where are your attachment points for it are. Just asking 'cause I'm still trying to learn to talk like a pirate but continually proven to be barely out of kindergarten.

 

[klark27]

So you have a permanent bridle that is used to take your mariner on and off the trailer when launching and pulling your boat out of the water that has nothing whatsoever to do with anchoring your boat when not sailing? Also might help to mention where are your attachment points for it are. Just asking 'cause I'm still trying to learn to talk like a pirate but continually proven to be barely out of kindergarten.

Yes the bridle for pulling my boat in and out of the water have nothing to do with anchoring it. I have attached an image of the points where I attach it to the boat. (On the two cleats in the back and then two clips forward on shackles attached to the side stays at their base.)

 

[Sailor Sue]

I have a Oday mariner and my lifting bridle is starting to get old and am looking to replace it. What just wondering if anyone is able to find dimensions on what works (will also take recommendations on what rope to chose).

thank you to all

Since you have the old one can't you just replicate it? You should already have all the dimensions you need.

 

[klark27]

Since you have the old one can't you just replicate it? You should already have all the dimensions you need.

I was looking for the original dimensions as mine has a couple of knots in it for small adjustments and also and feed back on what rope to make it out of.

 

[LLoyd B]

Lifting your boat off and on the trailer with a crane? I ask because most boats the this size are floated on and off or when lifted on and off by Marina the Marina provides lifting straps as part of the service.

 

[klark27]

Lifting your boat off and on the trailer with a crane? I ask because most boats the this size are floated on and off or when lifted on and off by Marina the Marina provides lifting straps as part of the service.

I am living during a 2 ton crane at my yacht club we lift j24, ensigns, etc which are all larger boats so it is definitely able to do it.

 

[Project_Mayhem]

Look for lifiting slings. It will help distribute the weight a bit better than line. Any legitimate manufacturer will list the breaking strength and working load limit. Over spec the line by a factor of at least three. In many industries they do a factor of 10.

 

[klark27]

Look for lifiting slings. It will help distribute the weight a bit better than line. Any legitimate manufacturer will list the breaking strength and working load limit. Over spec the line by a factor of at least three. In many industries they do a factor of 10.

Thank you.

 

[jssailem]

Is the mast down when you are lifting the boat?

 

[jssailem]

Looking at your diagram, it would be unusual for a builder of your boat design to create and ship a "bridle" (or lifting sling) with the boat. That leads me to believe that the sling you used was an aftermarket or previous owner solution to lifting the boat with a crane.

You will want something with very low stretch. There are a number of ropes with different prices.

• Dacron/polyester brade has a 5% stretch.
• You can use Dyneema rope with, in your case, nearly zero stretch.
• Or I would be inclined to get a polyester webbing that has minimal stretch.

Finding the center point of balance to keep the boat level when lifting will need to be discovered. It will be influenced by whether the mast is in place or not. Looking at your image, I would want to move the crossover point of the lines further to the bow or remove the mast so that you can find the balance point. You might also consider moving the points you use in the middle of the boat forward in front of the mast base for better balance.

 

[PaulK]

The bridle you have works. The Dyneema @dLj suggests is plenty strong enough, but you could copy your existing bridle using 10 or 12mm line and simply tie knots and it would work just as well. We used to hoist our Soling (27', 2300 pounds - drysailed most seasons) with a bridle I spliced up from 1.25" twisted nylon anchor line. This is not rocket science. While a knot reduces the safe working load, modern lines can be so strong that even with knots it's stronger than it needs to be. You don't need 100 feet of it either, and using knots enables you to adjust the bridle so the mast angles so it clears the crane just the right amount. Get it done and go sailing.

 

[klark27]

Is the mast down when you are lifting the boat?

No

 

[klark27]

The bridle you have works. The Dyneema @dLj suggests is plenty strong enough, but you could copy your existing bridle using 10 or 12mm line and simply tie knots and it would work just as well. We used to hoist our Soling (27', 2300 pounds - drysailed most seasons) with a bridle I spliced up from 1.25" twisted nylon anchor line. This is not rocket science. While a knot reduces the safe working load, modern lines can be so strong that even with knots it's stronger than it needs to be. You don't need 100 feet of it either, and using knots enables you to adjust the bridle so the mast angles so it clears the crane just the right amount. Get it done and go sailing.

Thank you, and I am aware of the modern rope comment this is just very very old and starting to show stretch (little concerning) but definitely still sailing.