From the 4th to the 10th, the 6th Cruiser Squadron was, with the _Orotava_ of the 10th Cruiser Squadron, cruising off the Norwegian Coast. From the 7th to the 10th the Dreadnought Battle Fleet was cruising in the northern portion of the North Sea, accompanied by the 1st, 2nd, and 7th Cruiser Squadrons and the 4th Flotilla; and the Battle Cruiser Fleet was also cruising during the same period in the central part of the North Sea. The opportunity was taken of carrying out various battle exercises. The 2nd Battle Squadron and 7th Cruiser Squadron did not return with the remainder of the Battle Fleet on the 10th, but remained at sea until the 11th. The 4th Flotilla was forced to shelter at Lerwick from the 7th to the 9th owing to bad weather. From March 10th to the 13th the 3rd Battle Squadron and 3rd Cruiser Squadron were cruising in the centre portion of the North Sea. From the 16th to the 19th the Dreadnought Battle Fleet again cruised in the northern and central parts of the North Sea, accompanied by the 1st, 2nd, and 7th Cruiser Squadrons, the 3rd Light Cruiser Squadron, and the 2nd Flotilla. The 2nd Flotilla, however, could not remain at sea on the 17th owing to bad weather and was sent back to Scapa. A collision occurred between the _Nemesis_ and _Nymphe_, which necessitated the docking of both vessels for repairs. The flotilla was ordered out again from Scapa early on the 18th, but only seven destroyers were available, and they reached the Fleet at 2 P.M. on that date. The Battle Fleet and cruisers carried out a strategical exercise in the early morning of the 18th, and then steered for the bases, a projected second exercise being abandoned as the Fleet was by this time in an area which was not considered safe from submarine attack; the visibility was also very high, and it was suspected that at least one enemy submarine might be in the neighbourhood. At noon the Battle Fleet was in Lat. 58.21 N., Long. 1.12 E., zigzagging at a speed of 15 knots, and the 4th Battle Squadron had just been detached to proceed to Cromarty, when at 12.18 P.M. Vice-Admiral Sir Cecil Burney commanding the 1st Battle Squadron signalled that a submarine’s periscope had been sighted from the _Marlborough_, the leading ship of the port wing column, and that a torpedo fired by the submarine had passed just astern of the _Neptune_, the rear ship of the column. The Fleet was at once turned away from the submarine 12 points to starboard (ships turning together) and speed was increased to 17 knots.