With special permission from Marpolo, here are the popular Canals maps he created for multiplayer naval combat, island hopping, and claim staking.
Galapagos: A version set in the fabled Galapagos Islands with strange fauna, rocky cliffs, and limited resources. Decks balanced for turtling (of course!) and sunken treasure awaits the adventurer.
Aleutians: This variant is set in a world made of silver ice. You start on a tiny iceberg and must sail for one of the bigger islands. The ice sheets themselves and the icy straits are rich in resources and sunken treasure.
Aegean: Islands vary in shape and size, so sail around a bit before choosing a place to settle down. Resources are abundant, but building space may be better on a neighboring island.
V3: Originally named Philippines, this version has softly sloping beaches, abundant resources, and decks made for rushing or turtling. Walling up is a potent strategy with smooth beaches.
The original CANALS from AOE3 Vanilla, this version is the most skill intensive. Many islands are simply too small to build upon, but contain important resources. High cliffs prohibit walling up, and some units are allowed (monitors, mortars) that are forbidden on the other maps.