Ship upgrades are an important part of Stargrave campaign play, offering players a place to spend money for some truly permanent improvements to their crews. New soldiers, weapons, and gear can all be lost in action, but ship upgrades are currently immune to loss no matter how badly your last battle went. This post will take a look at each of them, as well as adding a couple of suggestions for new upgrades.
But first, a word about a very important new soldier type added to the game in Last Prospector. The engineer is an expensive specialist with very lackluster gear and stats, but he's not there for his on-table abilities. Instead, he grants a large discount on the cost of all ship upgrades (and repairs, but those aren't a thing in the game - yet). His hiring cost (while high) is still low enough that he pays for himself several times over with just one of the more expensive upgrades, and all but the cheapest of them will still be at least a break-even case. In short, if you have the credits saved up to buy one or more upgrades, consider hiring an engineer to gain his discount. You'll save a lot of money in most cases, and you can then fire him and buy a different specialist with more on-table utility for your next game.
Ship upgrades that first appeared in Last Prospector are marked as (LP) below. Quarantine 37 didn't have any new upgrades.