Volvo Penta FWC Fuel Economy

[weigandc]

I'm wondering if anyone has information on how to determine the fuel economy/usage of a 150Hp Volvo Penta FWC engine. I'm looking into buying an older boat (1976 37' CHB Sport Fisher) and would like to estimate the fuel usage.

Boat has Twin, 150Hp Volvo Penta FWC engines with direct drive shaft. Engine model is TAMD79E.


Thanks!