Buccaneers are daring sailors who live a life of adventure on the high seas. They are known for their cunning, bravery, and skill with weapons. Buccaneers bring these qualities to the battlefield on ships, striking fear into the hearts of their enemies and leading their allies to victory. They are often charismatic and have sharp tongues, with a strong sense of humor and a love for telling stories of their adventures. Many buccaneers become ship captains or the commanders of fighting units in naval combat.

Source: Torrents of the Spellhoarder

Level 3: Sea Dog

Starting at 3rd level, you gain a deep understanding of ships and sailing, giving you proficiency with waterborne vehicles, navigator’s tools, and advantage on all Intelligence (Nature) checks related to the sea and maritime knowledge.

Level 3: Seaborne Strike

Starting at 3rd level, you learn how to fight with weapons while on ships. When you make a weapon attack while on a ship, you can add your proficiency bonus to the damage roll. You can use this feature a number of times per day equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.

Level 7: Salty Dog

Starting at 7th level, you have advantage on saving throws against being frightened and charmed. In addition, you gain proficiency in Strength (Athletics) and Wisdom (Perception) checks made while on ships. If you are already proficient in the skill, you add double your proficiency bonus to checks you make with it.

Level 10: Swashbuckler

Starting at 10th level, You can choose to move up to your speed as a bonus action, without provoking opportunity attacks. When you move this way, you can make a melee weapon attack against a creature with advantage. You can use this feature a number of times equal to your Dexterity modifier (minimum of 1), and you regain all expended uses when you finish a long rest.

Level 15: Inspiring Commander

Starting at 15th level, you can inspire bravery in your allies. When you take the Attack action, you can choose one ally within 30 feet of you to gain temporary hit points equal to your fighter level + your Charisma modifier (minimum of 1).

Level 18: Captain's Orders

Starting at 18th level, you learn how to rally your crew in combat. You can use your action to grant yourself and allies within 30 feet of you advantage on attack rolls and saving throws until the end of your next turn. You can use this feature a number of times per day equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.