Planning on getting a 41' sportfisher

New guy here, and this site has some great info. I am planning on buying a 1969-1975 sportfisher in the mid 40' range. I have my eye on a 41' Hatteras with twin 6-71's. I have found tons of info on the motors, watched videos, found rebuild kits, just about everything for them, including a schoolbus graveyard that can possibly have parts for them. There is no generator in this boat. Both motors claim to have under 1000 hrs. Unsure of true state or last rebuild.

My questions are other then a getting a survey,

1. What should be some of the things that will have me concerned?

2. Supposed cruise speed is 14 knots, is this accurate, and what could be the approx. fuel burn? I know that sea conditions and weight have a factor, just looking for approx on calm waters like the intracoastal waterway.

3. I'm a mechanic, so with that being said, what am I getting myself into?

I have plenty friends that have a marine background and I'm doing as much research as I can before I buy. I'm not looking to set speed records, just want to use it for fishing, relaxing, weekend trips, that kind of thing. Thanks for any info ya'll can provide.

Thanks for the info. I figured she was most likely a charter of some sort. A friend of mine has a 51' hatteras and hes the third owner. I think it was a 1975 and was a charter its whole life. Im not too concerned about the motors, mainly concerned if I need to pull it out of the water. I found Sams Marine, and would definantly use a marine store before a junkyard. The boat in be in East NC around Morehead City, and theres tons of places to get boat parts if I come across something hard to find. You did spark an interest, (no pun intended) about the electrical system. One question is with the engines running, do they charge the batteries on the boat to run the electrical? Strange question, and Im fairly certain I answered it, but just wondering. This would negate the need for a genset or equivalent.

How would I go about by checking the rudder posts and what are stuffing boxes?

Also with the 14kts, Im not sure how accurate they were on the site. Like most brokers, I take em with a grain of salt. I bought my kenner bay boat in south carolina, and I figured he would know a thing or two about boats. Didnt really know what he shoulda known. He was a good salesman tho. This is why Im doing the research, and thank you a bunch for letting me know what to look for.