The Sailor's Dirge is sadly very rare. And there is no such gameoption.
But if you want to see it, go into assets/xml/events. And look for the sailor's dirge event. Line 17310 in our internal version, but I don't think that file has been modified since patch B, or at least not in a way that would change the linenumbers.
change iPercentGamesActive to 100, and set the weight somewhat higher to see it. Margalard is currently at weight 4000, normal value 400. A higher weight value I'd expect increases the chance of it happening.
As a side note, that file is bloody huge. There's probably a lot of events in there with a low percentage of games active, which might serve with a bit of bumping up to increase variety in events. anyone care to make a module of that ?