The initial outlay for an aluminium craft may be higher than that for a comparable steel or fiberglass build, that cost will quickly be recouped:
Hull maintenance typically amounts to a cursory visual inspection, regular cleaning and replacement of the sacrificial anodes. This should keep the hull looking like new in 10 years time.
Aluminium does not need any protective painting, and the majority of operators do not apply anti-foul – this saves the cost of regular rubbing down and re-painting. The money you will have saved having your steel boat repainted will more than pay back the difference.
As mentioned, aluminium vessels can operate with smaller engines than similar steel and fiberglass builds, offering a saving on the initial cost of an engine and superior fuel economy.
Aluminium vessels have a high resale value thanks to the long life and high durability of the material.