Another thing with wearing steel-toes around sub-zero temps, as it very well may be in some areas. If you’re going to be out on deck and not doing a lot of manual labor to stay heated up (ie. lookout on the bow of a barge / ship, maneuvering, standing g’way watch) make sure to double up on socks, or consider getting kevlar toes. Kevlar toes are considered okay for safety shoes for most companies out there, I can’t say that for every company.
Once those steel toes go cold, your feet will be next, and it takes a WHILE to get that steel warm again!
Of course get comfortable inserts too, if you’ll be wearing those boots on the bridge while standing a watch.