Re: 1300 hrs. on sailboat engine in 23 years??
My 1987 Yanmar 44 has 611 hours on it.
In 2004 per the previous owners purchase survey it had 387.
The boat has no fuel gauge, so you have to estimate reserve based on engine run time.
The back of my hour meter (which is original to the boat) has absolutely no tool markings or signs of being tampered with.
Lessons learned are opportunities earned.