a Tier-3 item can be either a spaceship or a crew member. They typically start their levelling process at 40 and conclude at 165. See Test Hero Level 3 type and Test Ship Level 3 type for more details.
Oddly, there is a subset of Tier-3 items that I have called tier 3.50 because they act exactly like tier-3, but are special 50th-Anniversary-edition items. These are the parenthetical +2/+3 items for both crew and ships.
Currently there are 25(+3) Crew and 11(+3) Ships available from Tier 3.
All items (44)