Re: What is this....help
Is that black tube connected to anything? If not, follow NYBo's instructions. If it is (and it looks to me from the picture) that it's connected to the black thing below it (transducer maybe?). If that's the case, then you'd need to get yourself a tube to run from the speedo to the pitot. In my opinion, it isn't worth the hassle. Get a GPS. You'll find that the speedo is probably not very accurate.
How many bilge drains does your boat have? I see two in the picture. Just curious.
