Most of the gensets in the current charter fleet are an afterthought and were not fully engineered in the original marine architecture. You will need to get a full brief on the boat for the hull you are on and generator actually installed in that hull. To assume two boats and installation are the same would be mistake. The proper generator and engineering should be able to run 24/7 with a daily check of oil and cooling levels. You will find few charter boats today with that configuration. There are issues with stop and start short cycles on any diesel engine. The same would be true for under and overloading of the engine. You should ask your boat briefer.