CHAPTER

1.  Admiralty organization:  The changes in 1917

2.  Submarine campaign in the early part of 1917

3.  Anti-submarine operations

4.  The introduction of the convoy system

5.  The convoy system at work

6.  The entry of the united states:  Our naval policy explained

7.  Patrol craft and minesweeping services

8.  The Dover patrol and the Harwich forces

9.  The sequel

10.  “Production” At the admiralty during 1917

11.  Naval work

12.  The future

INDEX

LIST OF PLATES

A Mine Exploding

A German Submarine of the U-C Type

A German Submarine of the later Cruiser Class

A Smoke Screen for a Convoy

The Dummy Deck-house of a Decoy Ship

A Convoy Zigzagging

A Convoy with an Airship

Drifters at Sea

A Paddle Minesweeper

A German Mine on the Surface

Two Depth Charges after Explosion

The Tell-tale Oil Patch

A Submarine Submerging

Periscope of Submerged Submarine Travelling at Slow Speed

A Submarine Submerged

LIST OF CHARTS

(CONTAINED IN THE POCKET AT THE END OF THE BOOK)

A. Approach Areas and Typical Routes.

B. Typical Approach Lines.

C. Barred Zones Proclaimed by the Germans.

D. Patrol Areas, British Isles.

E. Patrol and Minesweeping Zones in the Mediterranean.

F. Showing French and British Ports within Range of the
German Bases at Ostend and Zeebrugge.

To

The Officers and Men
of our
Convoy, Escort, Patrol and Minesweeping Vessels
and their
Comrades of the Mercantile Marine

by whose splendid gallantry, heroic self-sacrifice, and
unflinching endurance the submarine
danger was defeated

INTRODUCTION

Owing to the peculiar nature and demands of naval warfare, but few dispatches, corresponding to those describing the work and achievements of our great armies, were issued during the progress of the war.  In a former volume I attempted to supply this defect in the historical records, which will be available for future generations, so far as the Grand Fleet was concerned, during my period as its Commander-in-Chief.  The present volume, which was commenced and nearly completed in 1918, was to have been published at the same time.  My departure on a Naval mission early in 1919 prevented me, however, from putting the finishing touches to the manuscript until my return this spring.