An hour later a masthead lamp blinked from the Vega—the senior officer's ship of the patrol flotilla. Then, in line ahead, the swift motor craft slipped quietly out of the harbour to overtake their slower consorts.
The Capella, like the rest of her sister ships, was cleared for action. Stanchion-rails were unshipped; everything likely to splinter was sent below. In the wake of the armoured protection, sandbags were placed to reinforce the steel plating. Although the patrol-vessels were not to take part in the bombardment, they had to be prepared in case a forlorn hope in the shape of a few German torpedo-boats might attempt a sudden onslaught.
As attendants upon the sea-planes, too, it was possible that the patrol-boats would have to approach within range of the garrison artillery, especially in the event of one of the aerial craft being disabled and falling into the sea, on its return from "spotting" the hits of the monitors' guns.
Dawn had not yet broken when the monitors, followed at two miles' distance by the motor patrol, came in sight of the search-lights on the low-lying Belgian coast. Beyond the limit of direct rays, yet within range of their monster guns, the monitors were safe from detection. All that was wanting was the presence of the sea-planes, for whose work daylight was essential.
Slowly a pale light spread on the north-eastern horizon. The short wintry day was breaking. The sea was calm. The air was piercingly cold. A thin coating of frost covered the Capella's deck. Ross and his chum were heartily glad of their thick pilot-coats, mufflers, and woollen "mitts", as they sheltered behind the breast-work erected on the bridge.
Captain Syllenger slowly paced the bridge, frequently glancing at the clock in the chart-room, since it was almost a matter of impossibility to consult his watch, owing to his generous accumulation of clothing. It was now nearly eight o'clock, but as yet there were no signs of the expected sea-planes.
Just then the dull morning light was pierced by a brilliant flash from one of the monitors. The watchers on the Capella's bridge could see the low-lying hull give a decided jerk in a sternward direction under the reaction of the enormous projectile.
Long before the shell reached its objective, other 14-inch guns added their quota, and the air was rent with the flashes of the ordnance and the ear-splitting detonations following the discharge.
"By Jove!" exclaimed Sub-lieutenant Fox, who with his brother officers had had telescopes levelled upon the faintly outlined sand dunes. "There are the sea-planes!"
He was right. Flying at a great height the air-squadron had passed over the warships, and had taken up their observation stations without being seen or heard by anyone on board the patrol-vessels immediately over the German batteries, they were cutting "figure eights" and describing seemingly erratic circles, while the observers, coolly wirelessing the results of the monitors' shells, hardly heeded the furious fire directed upon them by the hostile anti-aircraft guns.