Skull and Bones offers a generous system for carrying over your progress between seasons:
Character Progress: Your pirate captain’s level, skills, reputation, and unlocked ship components all carry over between seasons.
Inventory: Most of your gathered resources, materials, weapons, armor, and unlocked blueprints will be available for you to use in the new season.
There are a few exceptions to keep in mind:
Seasonal Currency: Any currency specific to a particular season might not carry over entirely. You might get some conversion rate or bonus for owning it in the next season.
Leaderboards: As mentioned earlier, leaderboards completely reset with each new season, offering a fresh start for everyone.
Overall, Skull and Bones lets you build your pirate empire progressively, with your efforts carrying weight across seasons.