Passing out through the mess I took a look at the recording barometer, which was high and steady, and went out on the quarter-deck to look at the weather. The stars were shining, a light east wind was barely perceptible, and a thin mist shrouded the buildings of the station and the ships in the harbour. But it looked as though the mist would lift, so I crossed the quarter-deck to the ship's office, where I turned out the Quartermaster, whom I found asleep, wrapped up in a blanket, balanced in a perilous position on the edges of three chairs.

The Quartermaster, electric torch in hand, doubled over to the officers' quarters, shook the Duty Steward, put a match to the ready-laid galley fire, and called the Duty Pilots. He then turned out the working party, the engineers, and the armourers, and warned the wireless operator and the flying engineer.

By this time I was down in the dark seaplane shed, in which only a single police light was burning, stumbling about among the monstrous shapes of the sleeping flying-boats. The marine sentry, recognising me by my language, turned on the roof electrics and flooded the shed with light.

The working party filtered in stretching and yawning, and rolled back the sixty-foot doors. They gathered round '77, which stood just inside the doorway on her wheeled trolley. She was fitted with specially large petrol tanks for the job in hand. At the word they pushed her out sideways, jacked her up, removed the sideway wheels, turned her nose towards the water, and handed her over to the engineers, who started the engines.

The armourers fitted on the machine-guns and provided them with special ammunition. The man told off for the purpose put on board a packet of sandwiches, a bottle of water, the five days' emergency ration in case the boat came down at sea, the Red Cross Box and the pigeons.

The oil in the engines being now warm, the engineers opened out one engine at a time, the fierce slipstream from the propellers shaking the whole tail of the boat and whirling up clouds of dust from the concrete. A two-foot flame stood out from each exhaust pipe, and particles of incandescent carbon, burning red, were blown backwards for many yards. In daylight you cannot see the flame or carbon.

It was now just beginning to get light. An eight-knot easterly wind was blowing, but a thick mist lay in the harbour, a mist too thick to take off in. So the engines were shut off and I went up to the mess. Here I found Billiken and Dickey devouring eggs and bacon, and joined them.

Billiken, a lad from Sault St Marie, Canada, was one of the best boat pilots ever in the service.

There are only two kinds of boat pilots—the good and the bad. In the spring of 1917 the good boat pilots could be counted on the fingers and thumbs of two hands, and throughout the year there were probably never more than twenty first-class men operating at the same time.

A good boat pilot is one who can handle his boat under any conditions, a mist flier, a stout and determined fellow; one who can navigate and trusts his own calculations; a tireless observer, who knows where and what to look for; a possessor of sea sense and seamanship; a man of physical stamina or nervous staying power; a man of quick and correct thought and action, but, at the same time, one who could endure monotony and wait for his opportunity.