scans of every card can be seen at 

http://www.marytcusack.com/maryc/decks/html/Cards/SevenSeas.html

The deck is about the dichotomy of a life at sea. The Red side of the deck; hearts and diamonds; explores famous sailors, explorers, pirates, and privateers of the age of sail. The court cards focus on the actual historical figures of the time and the cards ranked 2-10 of the hearts and diamonds feature different types of ships. The dark side of the deck explores the dangers sailors would face; be them real or fantasy. Court cards for the spades and clubs explore the monstrous creatures thought to lurk below the waves, while the ranked 2-10 cards focus more on superstitions and ghost ships.