Duke Kahanamoku Lagoon is a manmade lagoon which is owned by the State of Hawaii. The lagoon was part of the Henry J. Kaiser Hawaiian Village project which expanded the old Fort DeRussy Channel, creating the new beach and 14 foot deep lagoon. The lagoon was named after the surfer and Olympic swimmer Duke Kahanamoku.
The lagoon is located adjacent to the Ala Wai Yacht Harbor and the Hilton Hawaiian Village and can be easily accessed by walking along the beach. We decide to enjoy a little canoeing before heading out to lunch.
Hawaii has its own version of the canoe called the outrigger that mimics the boats the original Polyneasian settlers used to colonize the islands. You will see high school or university teams practicing near Ala Moana beach and you';; see individual outriggers plying the Alawai Canal. If you're on Waikiki, you'll even see groups of tourists heading out in outriggers to ride the waves in, much like the Polyneasians used to do. I have never participated in this myself, but maybe some day.
Kailua is the center for non-surfing watersports. From here you can rent kayaks and sailboards or if you wish go on a kayak tour.
Equipment: Equipment can be rented from many outfitters, the link below is the one I used. Can't provide a comparison of there services versus other outfitters but I was happy with what I got.