Where I worked the boat boys as we called them had checklists covering everything from fuel, water to fenders, ropes, water keys etc. We engineers did not have a list as such, just a box to tick to say the boat had been checked over. We did all the usual levels and cast an eye over the engine in general, checking batteries for a good charge was an important part as the engines do not always run for long on turnround days. We also had regular oil and filter changes throughout the season, BMC's and Nannis every 6 weeks and Perkins 4108's every 4 weeks as they seem to be a very dirty engine!!
We also had to check all lights, pumps, sliding canopys, gas bottles.