Crew members for your ship are mainly recruited by spending Rank Points. Increasing your ship's crew will help you in raiding enemy ships, and also help defend your ship from enemy raids. There are 4 types of crew: Engineers, Tactical Officers, Helmsmen, and Scientists.
Each Rank Point spent recruits 2 Engineers. 1 Engineer will increase your maximum Energy capacity by 1 point.
Lutuma Memory Core adds 1 engineer to your crew when its ability is activated.
Cobalt Drive adds 3 engineers to your crew when its ability is activated.
Experimental Crate adds 4 engineers to your crew.
Prototype Engineering Bay adds 10 engineers to your crew.
Engineers have no effect on energy recharge rates. To increase your energy recharge rate, build Relays.
Engineers take up no ship space whatsoever and have no upkeep cost. How and why they work so frugally is a matter of much debate. But it gives a good reason for considering using rank points for Engineers instead of for increasing Deck Spaces for expensive energy modules.
Each Rank Point spent will recruit 2 Tactical Officers. 1 Tactical Officer will increase your Attack by 1 point.
Experimental Crate adds 4 tactical officers to your crew.
Each Rank Point spent will recruit 2 Helmsmen. 1 Helmsman will increase your Defense by 1 point.
Lutuma Memory Core adds 1 helmsmen to your crew when its ability is activated.
Cybernetic Link Interface adds 2 helmsmen to your crew when its ability is activated.
Experimental Crate adds 4 helmsmen to your crew.
Taltherian Def-Opt adds a variable number of helmsmen to your crew, based on the number of defense and shield modules online on your ship at the time of use.
Each Rank Point spent will recruit 3 Scientists. 1 Scientist will increases your hourly Research rate by 1.
Each Q-Pedd Assembly Line adds 1 scientist to your crew when its ability is activated.
Experimental Crate adds 4 scientists to your crew.
Rescued Scientists add 5 scientists to your crew.
Rescued Specialists add 10 scientists to your crew.
Kronyn Evac Pods add 15 or 30 scientists to your crew.
RSL Memory Vault adds 23 scientists to your crew.
Prototype Engineering Bay adds 25 scientists to your crew.