Changes

Once you're a few dozen miles from shore you'll have no cell phone reception, you're much to to0 far from land to swim back, and it's unlikely there will be any other boats near enough to notice you need help without a call from the ship's radio. On long passages, there might not even be ships in radio range - you could go a week or more without even seening another boat. Boats at sea almost never have onboard internet access, except sometimes an option to send short emails or text messages through a sattelite satellite phone (which would normally be is likely controlled by the captain).