'I do. I believe we could get through.'
'Then I will suggest it to Lieutenant Strang.
'Lieutenant Strang,' he called. 'Before we start I have a suggestion to make. I will come across if you will permit me.'
'Certainly, sir.'
The launch lay so close to the submarine that it was easy for the Captain to spring across. Strang met him, and for some moments the two talked in whispers.
At first the commander of the submarine seemed unwilling to agree to the captain's proposal, but presently Ken, who was watching breathlessly, saw him nod his head.
Then the captain smiled, and turning leaped lightly back on to the launch.
'It's all right, Ken,' he said. 'We are going to try it.'
'Hurrah!' cried Ken in high delight.
'Try what?' demanded Roy. 'Hang it all! Don't keep us in the dark. What's all the mystery about?' Ken glanced at his father.