As necessary as the kayak itself while often overlooked Kayaking Safety Equipment is paramount to enjoying the water in a safe manner. As a bare minimum you should have:
Away to get help (A mobile phone in a waterproof case) Warm top Windproof top Hat First aid kit Drinking water Emergency food (chocolate is our preferred choice) Sunscreen A way of towing your buddy if they get tired/seasick/injured.
Keep all items safe and dry in a waterproof drybag accept your phone should be on your person at all times.
A paddle leash is also wise as in windy conditions your kayak will float away from your paddle if you drop it in the water leaving you without a way to return home.