Wait, you’re saying the crew member is a liability? For being concerned with a rusted through fuel tank, actively leaking fuel onto a paint tray, spilling on to a absorbent pad, into the bilge, and the bilge showing further neglect with disintegrating pipes so rusted and held together with damage control clamps it looks like actuating that ball valve might just shear the pipe off, and some mild copper corrosion for good measure? For a one month voyage? I don’t think explosion is the concern so much as the general seaworthiness of the vessel.
The captain is the liability here, who, per your comment, had 11 months to repair his boat and clearly gives no shits about maintenance, seaworthiness, or obviously the chance of some light pollution. Couple of guesses where that bilge gets pumped to in transit. Based on your comment I’d hate to see what you consider acceptable maintenance on your vessel!! Just because the USCG misses it or doesn’t ever see it doesn’t mean one can’t have some baseline standards of pride and seamanship.