Today I set out on a windless day, so engine on. I'm sitting off to the side so don't see the knotmeter, but after a while the penny drops that with the engine rpm at my normal 2300, I'm only doing 4.3 kt. Normally it's 5 point something, and it seems to me, now that think of it, that a few years ago it was more like 6. I anchored and dived on the propeller - nice and clean and no dings.
I checked the transmission oil level - right on the money. The speed sensor is nice and clean and although it was reading lower than the GPS, it was only half a knot off. The bottom was painted this winter and is nice and clean. I haven't checked whether anything is wrapped round the keel - the Chesapeake is so murky, you can't see the keel from the propeller, and the possibility didn't occur to me till later, but in any case it's unlikely. There's not many possibilities left.
Comments and wisdom would be much appreciated.ner
John Gard
I checked the transmission oil level - right on the money. The speed sensor is nice and clean and although it was reading lower than the GPS, it was only half a knot off. The bottom was painted this winter and is nice and clean. I haven't checked whether anything is wrapped round the keel - the Chesapeake is so murky, you can't see the keel from the propeller, and the possibility didn't occur to me till later, but in any case it's unlikely. There's not many possibilities left.
Comments and wisdom would be much appreciated.ner
John Gard