Raymarine Through Hull Speed Sensor should I antifoul it or not?

[prv]

The whole point of having such an arrangement is that it's easily removable. So why do people leave it in?

Until this winter, because removing it would flood seawater into a locker and down a wiring conduit.

However, I've now built a sort of coffer dam around the transducer, so that the water is contained. This should mean it gets removed more often.

Pete

 

[johnalison]

I must be the laziest sailor around because I leave my ST60 transducer in from the beginning of the season. I usually put a little silicon grease on the plastic bits, but otherwise nothing special. I seldom have to lift it for cleaning, maybe a couple of times in the season. Late in the season it tends to fill with crawly things from the adjacent hull, but otherwise, it's such an easy job to clean that I don't find it worth worrying about.

 

[Lucky Duck]

The need to clean the log impellor seems to depend on location. When I kept my boat at a marina on the river Crouch it needed very little attention. Sadly the same can't be said for my current berth on the Orwell where at the height of summer it becomes bunged up with all kinds if shrimp during the working week.

 

[BelleSerene]

The need to clean the log impellor seems depend on location. When I kept my boat at a marina on the river Crouch it needed very little attention. Sadly the same can't be said for my current berth on the Orwell where at the height of summer it becomes bunged up with all kinds if shrimp during the working week.

Could this be the answer?! I'm envious of Johnalison's success and wonder what I'm doing wrong. Could it be that the critters grow faster in Hampshire than in Essex?

 

[FWB]

Could this be the answer?

No, this is the answer
http://www.airmartechnology.com/uploads/brochures/cs4500.pdf
But they are expensive and hard to come by. I hope mine keeps working.

 

[Olianta]

Since I fitted the ST60 log to replace the old Stowe system I have been taking the transducer out and fitting the blanking plug every time I leave the boat. /QUOTE]

I do the same and I am quite happy without the use of antifoul though the manual of my Airmar speed transducer advices to do so. It's a five minutes routine job before you part and then before.you step on the dock leaving the boat for indefinite time. The same manual advices to follow this procedure if the boat remains stationary in the water for more than a week.

I was much surprised to find out that many boat owners in the marina where I keep my boat do not actually care of speed over water and true wind speed. Their transducers remain dead for the total season.

Rumen

 

[johnalison]

Could this be the answer?! I'm envious of Johnalison's success and wonder what I'm doing wrong. Could it be that the critters grow faster in Hampshire than in Essex?

You need to retire and do a bit more sailing. Keeping on the move helps, as does sailing in the Baltic or inland Holland. This year we sailed the Channel and my log was clear after three months.

 

[BelleSerene]

You need to retire and do a bit more sailing.

I know, I know!