Weird noise on turn

Boy am I glad I found this forum...
What a wealth of reading material here.

I cannot seem to find anything via the search on this topic so maybe someone can point me to a thread that has handled this already or give me someinsight.
I justpurchased a '78 SN with the 351 Commander. The boat is in really nice shape although the top end on the motor probably needs to be gone through but here is my question...
At cruising speeds the boat makes an odd kind of moaning sound when you turn. It starts out fairly loud and then fades away as the turn progresses. Could this be strut bushings or perhaps normal hull noise or something else? I also noted the other day after running around for an hour or two I was sitting at an idle and had a bit of a whining sound coming fromt he engine compartment. I had no idea what it was although the first thing that struck me was the transmission but I immediately shut off the motor. I then opened the cover and checked eveything but all seemed fine (including oil levels). I then went to restart the engine and when i turned the key there was nothing. Did this for a few times and then thought maybe I would have to tap the starter and the next time I turned the key (sitting for 5 minutes) it cranked back up and the whine was gone. Could this be a starter issue where it may have stayed engaged? Didn't sound like it was cranking just a whine. Anyway, sorry fo the long post and thanks for your help.

That's funny, my girl friend and I know of this noise, not what cause's it but it's kind of a water turbulence noise to me, I think it's the fact that the struts have a one strut gap, only two and far apart.

Don't worry, it's one of those noises you don't hear everywhere on the boat or all the time.

Thanks for the quick responses. We just did the title exchange onthe boat and as i turns out it is in fact a 79 not a 78 as the PO thought.
I was thinking the same thing about the tracking fins being the cause. Glad to hear it is not just my boat...
I found the other issue too with the starter. Appears to be the ignition switch. I think it is just getting worn.
Where would a guy get a new switch?

One other question too about this year SN. My engine appears to have a 180 degree thermostat installed but the manual says it should run on a 140 for a raw water system. Any input? Do your boats run 140 or 180 thermostats? Also it seems to be a cold blooded engine as it doesn't like to just jump back into action after it has been off for say 15 minutes or so. Are your SNs like this too?

Thanks again,
Mitch

i have an 86 sn that makes the same noise. i though it was the trany. changed the fluid and it didnt help. then i thought it was the strut bushing. changed that and it didnt help. i hope it is just hull noise.