1979 MONTAUK 17 Rigging Tunnel Repair

[PopeyeSJI]

I am overhauling a derelict 1979 MONTAUK 17. I have found the hull scarred but not waterlogged. Whereas I am able to repair the surfaces and drain-tube holes to prevent future water-incursion, I am struggling for solutions on how to seal and renew the rigging tunnel that runs under the deck from the console to the stern,
.

The rigging tunnel appears to have once had an aluminum tube inserted, which has now deteriorated and exposes the fiberglass glass to possible water.

Fig.1. The decayed rigging tunnel.

IMG_9951 (1).jpeg (11.04 KiB) Viewed 1139 times

Fig.2. The aft end of the rogging tunnel.

Screenshot 2025-05-08 at 06.46.08.jpg (206.07 KiB) Viewed 1139 times

I was thinking to try to insert a PVC pipe and seal the ends.

Please suggest a better solution.

[Jefecinco]

Perhaps a new tunnel could be used by installing a new piece of PEXpiping pushed through to the console.

[Phil T]

Installing a smaller diameter pipe and sealing the ends is a good approach.