If you loved the adventurous, ocean-infused magic and queer romance of 'In Deeper Waters', you’d probably enjoy 'The Gentleman’s Guide to Vice and Virtue' by Mackenzi Lee. Both have that swashbuckling charm with a side of emotional depth, though 'Gentleman’s Guide' leans more into historical Europe. Another great pick is 'The Gilded Wolves' by Roshani Chokshi—it’s got that same blend of heists, found family, and a sprinkle of mythology, but with a Parisian setting and alchemical puzzles.
For something darker but equally oceanic, try 'The Scorpio Races' by Maggie Stiefvater. It’s got mythical water horses and a fierce, atmospheric vibe. Or if you’re after more queer fantasy with a maritime twist, 'The Ship Beyond Time' by Heidi Heilig is a sequel, but the duology’s time-traveling pirate ship might scratch the itch. Honestly, any of these will keep you hooked if you’re craving that mix of danger, magic, and heart.