The denatured alcohol in the hold was essentially an industrial chemical. When the ship was discovered, nine of the barrels in the hold were empty. All of them were made of red oak, which was more porous and likely to leak than all the other barrels, which were white oak. 450 gallons of methanol pouring into the hold would cause a serious fume problem. Since the weather had been bad, the hold had been closed up for weeks. So when the weather improved, Briggs could have ordered "every hatch, door and window" opened (which is how they were found), attached the lifeboat to the ship with a rope, and ordered everyone in while the dangerous fumes dissipated. This would also explain why important documents and valuables were left behind, since those in the lifeboat thought they were coming right back. Then the weather must have changed, a strong wind caused the towline connecting the ship and lifeboat to break, and all those in it were doomed. [links]