I guess the anchors make also this printable I.O.U. a great option for hipsters who owe people stuff.
Download Seafaring IOU Cards
Four cards per page of these maritime themed IOU cards ensures you have all of your bases (read: loans) covered. Each IOU features a patterned background of anchors with a ship wheel. Design is in black and white with striped edges.
Download Seafaring IOU Cards in pdf format!