Lag Bolts (Chain Locker into Bow Pulpit through Fiberglass)
Posted: Mon Mar 16, 2015 4:33 pm
Hey guys (and ladies)
I haven't been here in a long time; I stay too busy with my new job to spend enough time on my boat. Anyway, as the Miss river and temps rise, I'm working on projects in Memphis. I bought a Lewmar Sport Fish Windlass (1000) 2 years ago when I bought the boat and was too busy fighting other problems to install it. So, I started recently and had lots of side problems that one would expect. I'm going to post some other "junk" rambling below, but the nuts and bolts of this post is, I can't line up the old Stainless Steel (SS) 3" hex bolts with the Marine Grade (MG) plywood that reinforces the Bow Pulpit (BP). So, I'm thinking about speed drilling a 1/4" hole through the plywood in the chain locker, through the fiberglass hull and into the Bow Pulpit. My big concern is that I can't remove the BP to inspect, so I don't want to cause a gel coat crack that I won't know about for years, until it spreads across the bow. I'd like some advice.
Now, for the details, the 3 1/2" hole through the BP, fiberglass deck and into the chain locker was never really adequately covered. Water entered over the 20 years (this is a 90 32' Flybridge named Invictus formerly Proud Mary from Baypoint Marina in Norfolk, VA). The water caused some softening of the deck immediately around the hole that the rode passed through, but nothing soft. The marine grade plywood, however was completely rotted and some areas were sagging when I started.
I was able to line up the three 5" Bronze bolts that run all the way through the BP into the chain locker with my new 3/4" MG plywood. However, when I removed the old plywood, 2 of the 4 3" hex bolts that held the plywood to the BP "wrung off" and I have no head. I can't seem to line up the 4 holes with the new plywood. So, what I'm thinking is that I'll just seal those 4 holes up (wrung off bolt and all) with 5200 and drive 4 new 1/4" holes up to the BP, then thread new 3" x 3/8" Lag screws through the fiberglass deck into the BP.
Now, I've drilled a few holes into fiberglass and it always scares me. This one really bothers me, because the fiberglass will be completely sandwiched and I won't know if it chips or cracks. A crack could be hidden by the BP that I can't remove and propagate as soon as I hit rough water.
Looking for any advice.
I know for a fact that I almost lost my girlfriend late fall by trying to drop the anchor in a bad spot of the Mississippi off Arkansas when she wouldn't release the rode and I was caught in the current. So, I want the windlass. Besides, the damn thing cost enough money to get out of my dock box and onto my vessel.
Thank you very much for reading and responding.
One note, It may be that what I'm referring to as the bow pulpit may be more practically considered an anchor tray, but I like BP better. It is a 4' chunk of 2" laminated teak.
I haven't been here in a long time; I stay too busy with my new job to spend enough time on my boat. Anyway, as the Miss river and temps rise, I'm working on projects in Memphis. I bought a Lewmar Sport Fish Windlass (1000) 2 years ago when I bought the boat and was too busy fighting other problems to install it. So, I started recently and had lots of side problems that one would expect. I'm going to post some other "junk" rambling below, but the nuts and bolts of this post is, I can't line up the old Stainless Steel (SS) 3" hex bolts with the Marine Grade (MG) plywood that reinforces the Bow Pulpit (BP). So, I'm thinking about speed drilling a 1/4" hole through the plywood in the chain locker, through the fiberglass hull and into the Bow Pulpit. My big concern is that I can't remove the BP to inspect, so I don't want to cause a gel coat crack that I won't know about for years, until it spreads across the bow. I'd like some advice.
Now, for the details, the 3 1/2" hole through the BP, fiberglass deck and into the chain locker was never really adequately covered. Water entered over the 20 years (this is a 90 32' Flybridge named Invictus formerly Proud Mary from Baypoint Marina in Norfolk, VA). The water caused some softening of the deck immediately around the hole that the rode passed through, but nothing soft. The marine grade plywood, however was completely rotted and some areas were sagging when I started.
I was able to line up the three 5" Bronze bolts that run all the way through the BP into the chain locker with my new 3/4" MG plywood. However, when I removed the old plywood, 2 of the 4 3" hex bolts that held the plywood to the BP "wrung off" and I have no head. I can't seem to line up the 4 holes with the new plywood. So, what I'm thinking is that I'll just seal those 4 holes up (wrung off bolt and all) with 5200 and drive 4 new 1/4" holes up to the BP, then thread new 3" x 3/8" Lag screws through the fiberglass deck into the BP.
Now, I've drilled a few holes into fiberglass and it always scares me. This one really bothers me, because the fiberglass will be completely sandwiched and I won't know if it chips or cracks. A crack could be hidden by the BP that I can't remove and propagate as soon as I hit rough water.
Looking for any advice.
I know for a fact that I almost lost my girlfriend late fall by trying to drop the anchor in a bad spot of the Mississippi off Arkansas when she wouldn't release the rode and I was caught in the current. So, I want the windlass. Besides, the damn thing cost enough money to get out of my dock box and onto my vessel.
Thank you very much for reading and responding.
One note, It may be that what I'm referring to as the bow pulpit may be more practically considered an anchor tray, but I like BP better. It is a 4' chunk of 2" laminated teak.