A small cruise ship operating in Southeast Alaska made an unexpected detour Monday night to help a 21-foot skiff that had run out of fuel between Petersburg and Juneau. Mark Zuckerberg's $300 million superyacht reportedly was closer to the crippled vessel but ignored calls for help.

Mark Zuckerberg is facing questions after his superyacht reportedly declined to assist a small boat that became stranded in south-east Alaska.The 387ft yacht, Launchpad, reportedly worth $300...