The exception is in games where 'hidden scores' are enabled. In such games, you can't see the ship count at any given point. However, before the ship limit is hit, you can generally gauge the ship count by the IDs of the ships you're building (they're essentially assigned sequentially, so if your starbases are building in the mid-to-high 400s, then bet that you're close to the limit).
Beyond that...when your starbases stop building, that's usually a pretty good hint that the ship limit has been reached. |