One idea could be to arrange a boat tour for him to explore the local waterways. Depending on where he lives, there may be opportunities for sunset cruises, whale watching tours, or historical site tours that could be a fun and memorable experience for him. Another option could be to get him a model boat kit that he can assemble and display in his home. He may also appreciate practical gifts, such as a waterproof boating jacket or a custom-made captain's hat with his name embroidered on it.
Or you can get him a star map with an important date you share.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.