Disaster has struck the coast of New Zealand, and to a considerably smaller extent, one Marlborough winery. In October, the Rena, a 775-foot-long, 50,000-ton cargo ship, ran aground on a reef as it was leaving New Zealand. Onboard the ship were 4,000 cases of Astrolabe Sauvignon Blanc-worth nearly $1 million. The name of the reef upon which the Rena remains stuck? Also Astrolabe. And the cruelest irony of all: An astrolabe is a navigational instrument that dates back more than 2,000 years, and which might have helped avoid the shipwreck.