The only deduction comes from the lack of information on the ability's effects and how the cooldown compares to other abilities in the game. However, from a mechanical standpoint, the scaling cooldown design is engaging and well-thought-out.

That’s a (approx. 41.3% decrease ) over 99 upgrades.

A good fit for the data:

The journey from a to a 17.6-second cooldown is the ultimate goal for any serious Navarch of the Seas commander. While the initial Degree 1 stats require patience, reaching Degree 100 turns the Navarch into a rapid-fire force that few opponents can withstand. Prioritizing these upgrades is essential for anyone looking to claim total mastery over the seas.