A short answer...?
Increasing the liability insurance is obviously the easiest and first move to make. The assignment of liability, though, created under the Hague-Visby rules that currently govern shipping—that needs to change, because the shipowners are not liable for errors of seamanship, and they should be. The equipment they have to predict weather is equipment that they didn't have in 1924, when these rules were made. They should take on a greater liability so as to take greater care with their cargo.