Upon arrival in the Aegean Sea, "Goliath" joined the First Squadron, which included seven other battleships and four cruisers, and was commanded by Rear Admiral Rosslyn Wemyss. The First Squadron was tasked with supporting the Landing at Cape Helles, which took place on 25 April. On the morning of the landings, "Goliath" took up a position off Y beach, some offshore to provide gunfire support. The protected cruisers and moved in closer, and all three ships opened fire at around 05:00, signalling the start of the attack. The Ottomans made no attempt to disrupt the landing, the Allied forces having successfully launched a surprise attack. By late in the day, however, an Ottoman counterattack had advanced from Krithia to threaten the British flank, but gunfire from "Goliath" and the cruisers broke up the attack. That night, the Ottomans launched another counterattack, this time against the centre of the British line, which was repulsed. Once the sun began to rise, "Goliath" and the cruisers, which had by then been reinforced by the cruisers and , shelled the Ottomans, forcing them to retreat again.