My game got stuck like this. Previously i cast a fishing line and sailed away before anything happened, then i clicked the G while sailing towards this. 
Probably too late to save it but that is a side effect from pad controls (you can scroll through different trinket/crew member tooltips with LB/RB and mouse wheel. You most likely just scrolled and that happened. You can get out of with with pressing space. I'll soon add a way out of it by just clicking anywhere else too cause that's just confusing.