January........................ 439,500 February....................... 781,000 812,000 March.......................... 885,000 600,000 April.......................... 1,091,000 788,000 May............................ 869,000 549,000 June........................... 1,016,000 758,000 July........................... 811,000 463,000 August......................... 808,000 591,000 September...................... 673,000 455,000 October........................ 674,000 470,000 November....................... 607,000 435,000 December....................... 816,000 514,000 9,470,500 6,435,000 Continuous detailed figures of losses are available only regarding the British and American merchant marines. Between August, 1917, and February, 1918, the British weekly losses were as follows: Week ending 1,600 tons Under Fishing and over 1,600 tons vessels August 5................ 21 2 0 August 12................ 14 2 3 August 19................ 15 3 2 August 26................ 18 5 0 September 2................ 20 3 0 September 9................ 12 6 4 September 16................ 8 20 1 September 23................ 13 2 2 September 30................ 11 2 0 October 7................ 14 2 3 October 14................ 12 6 1 October 21................ 17 8 0 October 28................ 14 4 0 November 4................ 8 4 0 November 11................ 1 5 1 November 18................ 10 7 0 November 25................ 14 7 0 December 1................ 16 1 4 December 8................ 14 7 0 December 15................ 14 3 1 December 22................ 11 1 1 December 29................ 18 3 0 January 6................ 18 3 4 January 13................ 6 2 2 January 20................ 6 2 0 January 27................ 9 6 1 334 116 30