They hurried down to the harbour. The seaplane was slung on board the cruiser, which steamed away northward, through the huge armada of British and French war-vessels, transports, and supply ships that thronged the sea. It was an open secret that the preparations for a combined attack by land and sea were far advanced. They heard the distant boom of heavy guns, which grew louder and more continuous as they neared the mouth of the strait. When they opened up the headland of Suvla Burun the course was altered a few points to the east, and another hour’s steaming across the Gulf of Saros found them some five miles from the coast, off Kurukli. Here the cruiser hove-to, and the seaplane was slung out. The captain had already given the airmen their bearings. North-west lay Enos and the river Maritza, with the Bulgarian port of Dedeagatch beyond. Keshan, their objective, was to the north-east, about thirty miles distant from the coast. "I will cruise about for four or five hours," said the captain, "keeping well out to sea, out of range of the batteries in the Bulair lines yonder." He pointed due east to the neck of the Gallipoli peninsula. "You have plenty of petrol?" "Enough for the job," replied Burton. "Well, good luck to you. ’Ware shrapnel." They slipped over the side into their places. Burton started the engine, and, after skimming the surface for a few moments, the seaplane rose like a bird and soared away, ever higher, towards the coast northward. II The sky was clear, the air calm--an ideal day for airmen. In a few minutes they passed over the rocky and precipitous line of the coast and pursued their flight inland. Hunter, closely scanning the country beneath through his glasses, presently exclaimed, "A gun!" and shortly afterwards, "A battery!" The guns were cleverly concealed from observation from the sea, behind a cliff, marked by a clump of the dense brushwood that flourishes on the shores of the Gulf of Saros. Hunter expected a shot or two from the gunners, but they made no sign, probably unwilling to reveal their position to the warships in the bay. They were saving their shot for more serious work than firing at seaplanes. Northward they saw a river flowing east and west. Passing over a village--Kiskapan, according to the map--they crossed the river almost at right angles with its course, and beyond a range of low hills discovered their objective about five miles away. They had travelled some thirty-five miles by dead reckoning, which corresponded with the estimated distance from the cruiser.