'It's a craft of some sort,' said Ken in a sharp whisper. 'The light's moving.'

'You're right. Starboard a trifle, Morgan.'

Again a pause. Then Ken spoke again.

'It's a tug, father. She's towing a string of barges. She's going across to Maidos.'

'Then I know what they're doing,' said Morgan.' They're taking stores across from the Asiatic side. I heard they had started that game since our submarines began to worry them in the Marmora.'

'I thought as much,' Captain Carrington answered quietly. 'Then it is up to us to stop it.'

Ken glanced quickly at his father, but there was not light to see his face. It was Morgan who voiced his thought.

'We shall bring the fire of all the batteries down on us,' he said.

'Of course,' Captain Carrington's voice was calm as ever. 'Starboard another point, Morgan. Ken, call Dimmock. He's an ex-gunnery lieutenant, and can handle the 6-pounder.'

'I'm here already, sir,' came a voice out of the gloom. I saw the light, and guessed what was up.'