At Easter they hold games that are a sort of naval tournament
It is worth it to me to point out that while Easter and the navy aren't normally associated, it makes perfect sense that the English would do so in London. Celebrating Easter with naval tournaments makes sense in no other context! England was the world's preeminent naval power. What follows is a description of one such tournament where a young man essentially jousts while standing on a boat, instead of riding a horse! How interesting.