Tim Good
Well-known member
Take a look at these chain plates in the picture below designed for a Jordon Series Drogue. Mr don Jordon said that you should ideally design each of your chain plates to hold half the boats displacement. In my case this would be 18/2 = 9 Tonnes.
Facts:
- My boat displaces 18T
- Hull top sides are solid GRP 10-12mm
- Current chain plates are 30cm long, 10mm thick and would allow approx 4 large M10/12 bolt holes to be drilled.
- Everything else in the system such as bridal, bow shackles and JSD are all rated to 9T +
The question I have is, would a chain plate of say 60cm with 8 larger bolts be twice reistant to tearing out of the hull as a chainplate of 30cm with 4 bolts?
The reason for asking is that I am trying to devise a way of ensuring my chain plates are up to the job and making them longer than my existing 30cm with more bolts, would be an easy solution as opposed to something like building up the inside with epoxy etc.
Facts:
- My boat displaces 18T
- Hull top sides are solid GRP 10-12mm
- Current chain plates are 30cm long, 10mm thick and would allow approx 4 large M10/12 bolt holes to be drilled.
- Everything else in the system such as bridal, bow shackles and JSD are all rated to 9T +
The question I have is, would a chain plate of say 60cm with 8 larger bolts be twice reistant to tearing out of the hull as a chainplate of 30cm with 4 bolts?
The reason for asking is that I am trying to devise a way of ensuring my chain plates are up to the job and making them longer than my existing 30cm with more bolts, would be an easy solution as opposed to something like building up the inside with epoxy etc.
Last edited: