A ship belonging to the Open Arms aid group approaches the shores of Gaza towing a barge with 200 tons of humanitarian aid on March 15. Abdel Kareem Hana/APAn aid ship bound for Gaza is less than 10 kilometers (6.2 miles) off the coast, according to MarineTraffic.com data.The aid ship departed Cyprus on Tuesday with 200 tons of food onboard, according to World Central Kitchen, a non-profit that said it is the first maritime shipment of aid to Gaza.Eyewitnesses in the northern part of Gaza told CNN on Friday that they could see a white non-military cargo ship off the coast — something…