"First of all I will empty the bow chambers of water by means of the compressed air; then the middle chambers, and, lastly, the stern chambers.

On a smaller craft than this we would operate directly with the wrench.

On a boat of the 'Dodger's' type we must employ the wrench first, but the work must be backed up with the performance of a small electric motor." Captain Jack rapidly indicated the points at which the wrench was to be operated, adding: "I want you to note these points as I explain them, for after I start with the wrench I shall have to work rapidly along from bow to stern tanks.

Otherwise we would shoot up perpendicularly, instead of going up on a nearly even keel.

Mr.Hastings, are you all ready at your post ?" "Aye, aye, sir," came back the engineer officer's reply.
"On post, Mr.Somers ?" "Aye, aye, sir." Lieutenant Jack applied the wrench, calling snappily: "Watch me.