Raymarine ST-60 Thru Hull Holes

[sailstoo]

I have an opportunity to buy a couple of new ST-60 instruments, depth and speed at a fair price. Yes, I know they're discontinued but they match the wind instrument I already have. I also have a couple of old Signet speed and depth instruments that are marginally functional. The question is, are the thru-hull holes for the old depth transducer and the speed wheel the same size as the ST-60 transducers? I'd go measure them but the boats 250 miles away. Thanks for the help.

[Ex-Calif]

Originally Posted by sailstoo

I have an opportunity to buy a couple of new ST-60 instruments, depth and speed at a fair price. Yes, I know they're discontinued but they match the wind instrument I already have. I also have a couple of old Signet speed and depth instruments that are marginally functional. The question is, are the thru-hull holes for the old depth transducer and the speed wheel the same size as the ST-60 transducers? I'd go measure them but the boats 250 miles away. Thanks for the help.

This will be hard to say. I replaced an ST60 speed log with a used, newer ST60 speed log. The thru-hull was bigger and I had to expand it.

[BoonMcGee]

Hey Sailstoo, I'd be interested in the old signet display head if you deleted and still have it. Signet doesn't have any Lcds to repair with and I don't have the cash for their new system. Let me know if you'd like to sell it. Thanks, Boon.

[Pete7]

I replaced my instruments a couple of years ago with ST60s. The Raymarine transducers were a larger diameter. Rather than faff around with files or cutting disks like a flap wheel or dremel, I smacked a wooden bung in from the outside and then cut it level with the hull. Next with a HD tank cutter just cut a new perfectly round hole. Used the wooden bung to do the second hole too. Took about 10 minutes and gave a nice clean round cut. Don't try cheap tank cutters you need good quality ones.


Pete