A single small sailboat with barely any cargo capacity and with 12 activists on board, is enough evidence to determine that this is just a publicity stunt. The group claims to have taken different types of supplies as aid, but they didn't give specific numbers. The only ones that I could find with numbers were 100kg of flour, 250kg of rice, and 600 diapers. Keep in mind, that's 2 50kg bags of flour, 5 50kg bags of rice, and 3 large boxes of diapers. You could fit the amounts they've taken for these 3 supplies in the back of a typical pickup truck. The supplies on the ship are clearly just symbolic.