The Gagarin class was a type of Federation starship operated by Starfleet during the early 25th century. Based on the configuration of the Shepard class from the 23rd century, it contains many design elements of this class.
According to this blueprint the ship has 16 decks.
 |
| schematic by Star Trek Online |
- The premise for all my deck calculations: a deck is 2.5m + 0.5m for EPS cables, power cables, ... = 3m height for a deck.
- My calculations follow a purely mathematical approach. I do not compare bridge modules or disk heights with each other. I always pull in decks based on the rows of windows and then calculate a physically plausible room height.
The official length of 492m definitely can't be correct, which can be deduced from the rows of windows. If the ship were 492 m long, then decks 1 and 2 would be one, or the deck height would only be 2.06 m including the cables and technology. This would leave only 1.56m of headroom.