| PAGE |
| The North Sea Mine Barrage | [Frontispiece] |
| Mine Assembly and Storage Sheds | [22] |
| A Mine in Mid-Air, Being Hoisted in | [25] |
| Launching a Mine Through the Stern Port | [26] |
| The Sequence of Operations After a Mine is Launched | [27] |
| A Mine Carrier Steamer | [30] |
| Mines and Mine Anchors Awaiting Assembly | [35] |
| Loading Mines into Lighters | [36] |
| Squadron Flagship San Francisco | [37] |
| The Mine Squadron at Sea | [40] |
| Arrangement of Mine Tracks, Elevators, and Turntables, in
Roanoke Class of Minelayers | [51] |
| The Squadron in Minelaying Formation | [59] |
| Approaching and Laying the Fourth Mine Field | [63] |
| The Boston-New York Passenger Liner Massachusetts | [101] |
| The 20-Knot Minelayer Shawmut | [102] |
| Organization of the Mine Force | [105] |