The Month's Submarine Record
British merchant ships sunk during the month ended April 7, 1918, were fewer than in the preceding month, the weekly official reports showing a sharp increase followed by an unusually low record, resulting in a considerably decreased total. The British Admiralty figures were:
| Over | Under | Fishing | |
| 1600 Tons. | 1600 Tons. | Vessels. | |
| Week ended March 17, 1918 | 11 | 6 | 2 |
| Week ended March 24 | 16 | 12 | 1 |
| Week ended March 31 | 6 | 7 | 5 |
| Week ended April 7 | 4 | 2 | 2 |
| — | — | — | |
| Total for four weeks | 37 | 27 | 10 |
| — | — | — | |
| Total previous 4 weeks | 53 | 16 | 9 |
One of the largest vessels sunk was the British steamship Minnetonka, 13,528 gross tons, formerly in the New York-London service of the Atlantic Transport Line. This happened in the Mediterranean in February, 1918, while the Minnetonka was in the service of the British Admiralty. The Minnetonka was the last of the four passenger ships of the line, aggregating 55,099 gross tons, to remain afloat. The others all have been sunk since the war began. The three others were the Minneapolis, sunk March 22, 1916; Minnehaha, sunk Sept. 7, 1917, and the Minnewaska, sunk Nov. 29, 1917.
Incomplete French records show the loss of three vessels of over 1,600 tons and five under 1,600 tons. Italian losses included seven steamships of over 1,500 tons, three sailing vessels of over 100 tons, and fifteen smaller sailing craft.
Official dispatches from Barcelona reported the sinking by German submarines of two Spanish vessels, one in the Mediterranean and the other off the Canary Islands. These reports confirmed the statement that Germany had commenced a blockade of the Spanish coast to prevent the use of Spanish shipping to help the Allies.
A German submarine of the largest seagoing type on April 10 appeared in the port of Monrovia, the capital of Liberia, on the west coast of Africa, and bombarded the wireless and cable stations there. The submarine threw scores of shells from her deck guns into the wireless station, causing extensive damage. She had just turned her attention to the cable offices when a steamer was sighted passing the harbor mouth. The submarine left in chase and did not return. Liberia declared war on Germany Aug. 4, 1917.
Some indication of the losses sustained by the German U-boat fleet is contained in the following reports:
Nine members of the crew of a German submarine which was sunk by an American liner on March 10, when two days out from a French port, were taken prisoners. The rest of the crew perished, the Captain committing suicide when he saw that his submarine was doomed.
Under a heavy attack from three German submarines and three German destroyers, a British seaplane persisted in its efforts against another enemy U-boat and succeeded in sinking it before being damaged by the fire of the other enemy warships. Seaplanes also accounted for three other submarines.