Seller agreed to ship by sea 10,000 tons of potatoes FOB Tacoma, Washington, to Buyer in Japan. Buyer designated the SSRussetto take delivery at pier 7 in Tacoma. On the agreed-upon date for delivery, Seller delivered the potatoes to pier 7, but the ship was not at the pier. Because another ship using the pier was slow in loading, theRussethad to anchor at a mooring buoy in the harbor and Seller had to arrange for a lighter to transport the potatoes in containers to the ship. The lighter tied up alongside theRusset, and a cable from the ship's boom was attached to the first container. As the container began to cross the ship's rail, the cable snapped. The container then fell on the rail, teetered back and forth for a while, and finally crashed down the side of the ship, causing the lighter to capsize. All of the potatoes were dumped into the sea. Buyer now sues Seller for failure to make delivery. Is the Seller liable? Why or why not?