SailNet Community - View Single Post - Raymarine ST40 speed transducer nearly sunk me
View Single Post
post #6 of Old 05-06-2013
Senior Member
Join Date: Feb 2011
Location: San Francisco Bay area
Posts: 2,618
Thanks: 5
Thanked 62 Times in 62 Posts
Rep Power: 5
Re: Raymarine ST40 speed transducer nearly sunk me

Is this the thru-hull that has a flap inside, to prevent most of the water entry while changing the plug?

Small chance this is the issue, but when Airmar changed the thru-hull for my DST800 transducer to include a flap, the transducer changed too. The new version is identified by a yellow O ring under the cap. Yellow O ring with flap, black O ring without flap.

Bristol 31.1, San Francisco Bay
MarkSF is offline  
Quote Share with Facebook
For the best viewing experience please update your browser to Google Chrome