Author Topic: Mast Stepping Plate - Damaged?  (Read 452 times)

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Mazu

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Re: Mast Stepping Plate - Damaged?
« Reply #6 on: February 28, 2021, 03:01:28 PM »
Update:

I contacted Hylas.Queen Long and they were (as expected/per usual) very responsive and supportive.  I've also had a second opinion and a closer inspection. 

The rigging is over tightened and is deforming the cabin top - pulling in on the sides and raising the middle - and slightly shifting the bulkhead vis-a-vis the door(s).  This also made in very difficult to remove the mast cover in the salon.  As surmised here, there is no damage to the plate where the mast steps.  As constructed it would be quasi impossible to do so. 

The rake and curve do appear to be too much as well.  We'll have everything readjusted when it goes back in the water.

Thanks for the insights.

Nirvana

  • Nirvana - H46 #13
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Re: Mast Stepping Plate - Damaged?
« Reply #5 on: February 27, 2021, 12:09:44 AM »
Agree with Jim.  The I-Beam under the sole is significant.  I seriously doubt any adjustments to the rig could distort that 12 inch steel I-beam.

I would be looking at the chain plates.  As they are anchored inboard in the structure the mechanical moment they would creat from over torque could pull up on the cabin top which would translate into the bulkheads and framing beneath.

Granted it would take a tremendous over torque to do that it is possible.  In fact our prior boat, C&C 35 Mk III experienced some door sticking on a cruise a couple weeks after we finished the Spring Off-Soundings series.  Turned out a zealous crew member cranked the back-stay and never released it. Once we released it suddenly the sticking door was unstickelized! (I just created that word... LOL ).

Anyway, my thoughts on the matter.  Hoping no serious damage was done.
« Last Edit: February 27, 2021, 12:18:31 AM by Nirvana »
Ken Sabatini
Nirvana - ‘97 Hylas 46 #13

Ripple

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Re: Mast Stepping Plate - Damaged?
« Reply #4 on: February 24, 2021, 09:49:21 PM »
I violated my own rule a used an apostrophe that wiped out my missive. As I was saying, mast bend, even slightly, is preferable so reverse bend can not happen; think of bending a paper lip back and forth. Without currently being on our boat, I recall the mast sitting on an I beam that sits on the keel. If the beam is somehow damaged, I would think it would distort the hull, highly unlikely. The floor joists rest on the beam so reinforcing the floor would do nothing. The sailmaker should determine the amount of bend the mast should have. The luff of the headsail under load will determine the tension on the back stay. When sailing in 15-20 kts on a beat, the leeward shrouds should be under no tension, loose but not sloppy loose. The deck is somewhat supported by the mast and an adjustment for that is in the mast locker. However, it nearly never needs adjustment.
Jim
H46-53

Ripple

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Re: Mast Stepping Plate - Damaged?
« Reply #3 on: February 24, 2021, 09:35:10 PM »
I wouldn

joel

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Re: Mast Stepping Plate - Damaged?
« Reply #2 on: February 24, 2021, 05:15:53 PM »
If the rig was tightened enough to bend the mast then it is possible the mast step was damaged.  He was driving the mast through the bottom of the boat.

There is no LOOS gauge big enough to handle our rigging, so it is not an exact science.  Was the rigger playing guitar on the shrouds?

Perhaps your insurance should get involved?

Mazu

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Mast Stepping Plate - Damaged?
« Reply #1 on: February 24, 2021, 12:02:15 PM »

Hi All.

When I bought Mazu (H46, #61) in October the surveyor suggested a rigging adjustment. So, I hired a rigger who had come highly recommended. He over tightened the rigging and I know it caused issues (sternward rake snd slight bow to the mast, sticking doors to mast and forward cabin).

She is on the hard and I hired another rigger to come evaluate the rigging. I received this.

I went aboard your boat, to check some things about mast. I noticed (doubt that I already had) that the mast base plate compressed the floor by subsequently pulling the deck. So, unfortunately, the best solution for me is to remove the mast and reinforce the floor.

My question to you all ... does this make sense? Is it possible? I will also ask Queen Long, but in the meantime would appreciate any insights.

Best.
« Last Edit: February 24, 2021, 12:03:48 PM by Mazu »

 

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