A "cruise to nowhere" off Singapore was cut short yesterday after a passenger tested positive for the coronavirus, officials said, a blow to efforts to revive the hard-hit industry. Early yesterday morning the holiday calm was shattered by an announcement the cruise was being cut short after an 83-year-old passenger had tested positive.  The vessel had 1,680 guests and 1,148 crew on board, and arrived early morning in the city-state after turning back on day three of a four-day cruise, the Straits Times newspaper reported. The Singapore tourism board added that all on-board leisure activities were halted and passengers were asked to stay in their cabins.