Be careful mixing criminal code and Ontario HTA when it comes to boats though.
If your DUI is in a car and your suspension is strictly limited to cars, you are not automatically prohibited from driving a boat according to several sources I’ve found online.
Not saying all this applies to the case at hand, this guy will indeed perhaps be specifically restricted from boats given the situation, but clarifying the situation at large - a car DUI that doesn’t result in a specific suspension of one’s boating licence as well apparently doesn’t subsequently restrict one’s ability to captain a boat. Although getting a DUi on a boat can work in reverse and cause your DL to be suspended.
(In no way as part of this debate am I condoning DUI or drinking and boating, just debating is all…)