The blockade of the Mexican ports that was maintained was not by any means a paper blockade. It was actual, and the very opposite of the merely formal closing of ports which the United States had so long protested against in other countries. The hardships of the men and officers were fearful and the casualties very great. The tediousness of the service was relieved now and again by daring expeditions into the rivers and ports, where boats were cut out and taken away from beneath batteries on shore. The record of such ventures shows that the navy in 1846 and 1847 was no whit inferior in dash to the one which made the flag glorious some years before in the war with England. One instance of such a venture is quoted from the "Recollections of a Naval Officer," by Captain William Harwar Parker. He was telling of the blockade at Vera Cruz in 1846. He says: "One of the finest fellows in the service I often met on Green Island. I allude to Passed Midshipman Hynson, of Maryland. He was drowned in the brig 'Somers,' when she capsized in the fall of this year. At the time of her sinking, Hynson had both of his arms bandaged and in a sling, and was almost helpless. It was said that when the brig sank he managed to get hold of a spar with another man, and finding it would not support two he deliberately let go his hold. It was like him. The way he happened to have his arm in a sling was this: While the 'Somers' was maintaining the blockade of Vera Cruz, a vessel managed to slip in--I think she was a Spanish schooner. The Mexicans moored her to the walls of the Castle of San Juan for safety; but the officers of the 'Somers' resolved to cut her out or burn her. Hynson was the leading spirit in the affair, though Lieutenant James Parker, of Pennsylvania, was the senior officer. They took a boat one afternoon and pulled in to visit the officers of an English man-of-war lying under Sacrificios Island. It was quite usual to do this. After nightfall they left the British ship and pulled directly for the schooner, which they boarded and carried. This, be it observed, was directly under the guns of the castle and the muskets of its garrison. The crew was secured, and finding the wind would not serve to take the vessel out, it was resolved to burn her. Her captain made some resistance, and the sentinel on the walls called out to know what was the matter. Parker, who spoke Spanish remarkably well, replied that his men were drunk and he was putting them in irons. The party then set fire to the vessel and got safely away with their prisoners. It was in setting fire to the schooner that Hynson got so badly burned."