Naval history can be measured through ships, crews, weapons, geography, battles, and the institutions that preserve evidence about them. The figures below span USS Constitution, the U.S. Pacific Fleet, major American naval milestones, and the Naval History and Heritage Command (NHHC). Dates and locations are included because a ship’s dimensions, a fleet’s size, and a battle’s scale only make sense in their historical setting.
Contents
- USS Constitution by the numbers
- Dimensions, sails, and performance
- Armament and War of 1812 service
- The Pacific Fleet’s scale and origins
- Pacific operations and turning points
- Twentieth-century fleet milestones
- Preserving naval history
USS Constitution by the numbers
The Naval Armament Act of 1794 authorized six frigates for the new U.S. Navy. The six frigates included USS Constitution, Congress, Chesapeake, United States, President, and one additional sister ship authorized under the act. Constitution was therefore part of the Navy’s original six-frigate program, rather than a later addition to an already established fleet. (USS Constitution infographic)
Constitution launched on October 21, 1797, and made her first sail on July 22, 1798. Those two dates separate construction from active movement at sea, an important distinction when reading early naval timelines. She later became associated with the War of 1812, during which she had a loaded displacement of about 2,200 tons and carried about 450 officers, sailors, and Marines. (USS Constitution infographic)
Today, the ship’s displacement is 1,900+ tons. Her present crew includes three U.S. Navy officers and about 80 enlisted sailors, while the crew is made up of active-duty Navy personnel. The modern complement is consequently much smaller than the approximately 450 people associated with her War of 1812 service. These are measurements for different periods and should not be treated as a single crew or displacement profile. (USS Constitution infographic)
Constitution is described as the oldest commissioned warship afloat. The Navy uses her for outreach, ceremonies, and seamanship demonstrations. Her current role connects a historic commissioned vessel with public education and living demonstrations of naval practice. (USS Constitution infographic)
Dimensions, sails, and performance
Constitution measures 207 feet from billethead to taffrail. Her overall length, from flying jibboom to spanker boom, is 305 feet, while her waterline is 175 feet. These measurements use different reference points: the waterline describes the ship’s length at the water, whereas the overall figure includes the extended spars and fittings at the ends. (USS Constitution infographic)
Her beam is 43 feet 6 inches. Her draft was about 24 feet aft when fully loaded during the War of 1812, compared with a modern aft draft of 22 feet 6 inches. The historical and modern draft figures are not interchangeable because they describe the ship in different periods and conditions. (USS Constitution infographic)
The mainmast rises 172 feet from the spar deck to the mainmast truck. Constitution carries 44 to 48 sails, and her sail plan uses more than 44,000 square feet of canvas. The range of 44 to 48 reflects the reported sail count, while the canvas figure describes the area of the plan rather than a count of individual sails. (USS Constitution infographic)
Her top speed is about 13 knots, or 15 miles per hour. The two expressions describe the same approximate top-speed figure in nautical and statute-mile terms. Speed should be read as a reported maximum, not as a claim that the ship traveled at that rate continuously during every voyage. (USS Constitution infographic)
| Constitution measurement | Reported figure | Historical context |
|---|---|---|
| Waterline | 175 feet | Ship length at the waterline |
| Overall length | 305 feet | Flying jibboom to spanker boom |
| Beam | 43 feet 6 inches | Reported breadth |
| War of 1812 loaded draft | About 24 feet aft | Fully loaded condition |
| Modern draft | 22 feet 6 inches aft | Present-day figure |
| Mainmast height | 172 feet | Spar deck to mainmast truck |
| Top speed | About 13 knots / 15 mph | Reported maximum |
Armament and War of 1812 service
The ship’s War of 1812 armament included 24 32-pound carronades on the spar deck. The carronades had a reported range of 400 yards. Constitution also carried one 18-pound bow chaser on the spar deck and 30 24-pound long guns on the gun deck. The long guns had a reported range of 1,200 yards. (USS Constitution infographic)
The contrast between the two ranges is useful when considering the different weapons together: the carronades are listed at 400 yards, while the long guns are listed at 1,200 yards. That is a three-to-one difference in the supplied range figures, but the roles and placement of the weapons were not identical. The bow chaser was a separate single gun, not part of the 30-gun long-gun count. (USS Constitution infographic)
Constitution defeated four British warships in three sea battles during the War of 1812. The infographic names those opponents as Guerriere, Java, Cyane, and Levant. The count of four warships and the count of three battles describe different units of history: ships are counted as opponents, while battles are counted as engagements. (USS Constitution infographic)
After the Guerriere battle, Constitution received the nickname “Old Ironsides.” The nickname is linked to that specific engagement rather than to every battle listed in the ship’s War of 1812 record. The same source identifies the ship’s War of 1812 displacement, crew, draft, and armament as period-specific figures. (USS Constitution infographic)
Selected white oak trees were designated for Constitution restorations in 1976. The designation shows that preservation required planning beyond the ship’s original construction era. Constitution is maintained under Public Law 523 of 1954, according to the NHHC Guide. (USS Constitution infographic; NHHC Guide)
The Pacific Fleet’s scale and origins
The U.S. Pacific Fleet’s area of responsibility spans 100 million square miles, described as nearly half the Earth’s surface. Its reported force consists of approximately 200 ships, about 1,500 aircraft, and about 150,000 military and civilian personnel. These figures describe the fleet’s organizational scale and geographic responsibility, not the number of vessels present in one harbor or one battle. (U.S. Pacific Fleet command history)
| Pacific Fleet measure | Reported figure |
|---|---|
| Area of responsibility | 100 million square miles |
| Share of Earth’s surface | Nearly half |
| Ships | Approximately 200 |
| Aircraft | About 1,500 |
| Military and civilian personnel | About 150,000 |
The Pacific Squadron was established in 1821. The East India Squadron joined in 1835, and Pacific Squadron operations expanded to Sumatra in the 1830s. The Mexican-American War ran from 1846 to 1848. These dates place the fleet’s early development within a sequence of expansion, regional operations, and war rather than a single founding event. (U.S. Pacific Fleet command history)
Matthew Perry delivered Fillmore’s letter in July 1853 and signed the Japan treaty in March 1854. The treaty opened Japan to trade for the first time in 300 years, according to the U.S. Pacific Fleet command history. A Pacific Fleet warship helped quell riots in 1874, and Pearl Harbor coaling rights followed later in the 1870s. (U.S. Pacific Fleet command history)
Pacific operations and turning points
Dewey’s Manila Bay victory came on May 1, 1898. The battle lasted seven hours, and eight Spanish warships were destroyed at Manila Bay. The date, duration, and ship-loss count provide three different measures of the same episode: when it happened, how long the battle lasted, and the number of Spanish warships destroyed. (U.S. Pacific Fleet command history)
The Pacific and Asiatic squadrons were combined into the United States Pacific Fleet on April 15, 1907. In 1922, the Pacific and Atlantic fleets were combined into the United States Fleet. The Pacific Fleet headquarters moved to Pearl Harbor on February 1, 1941. Japan attacked Pearl Harbor on December 7, 1941. (U.S. Pacific Fleet command history)
At the end of World War II, the U.S. Navy had 6,768 ships in service. This is a Navy-wide end-of-war figure, not a Pacific Fleet total. Keeping that geography explicit prevents the wartime Navy total from being confused with the Pacific Fleet’s later organizational figures. (U.S. Pacific Fleet command history)
The Korean War began on June 26, 1950, and its cease-fire was signed on July 27, 1953. By the mid-1960s, more than 200 ships were committed to Vietnam operations in the South China Sea. The Vietnam figure describes ships committed to an operational theater, not necessarily the Pacific Fleet’s entire inventory. (U.S. Pacific Fleet command history)
Twentieth-century fleet milestones
Operation Desert Shield began on August 4, 1990. More than 50 Pacific Fleet ships deployed for Desert Shield, and about 20 amphibious ships were ultimately deployed. Operation Desert Storm began on January 16, 1991. The deployment figures are approximate or threshold descriptions, so they should be read as scale indicators rather than exact fleet rolls. (U.S. Pacific Fleet command history)
The Tarawa ARG carried out cyclone relief work in May 1991, and the Philippines evacuation happened in the summer of 1991. These events show the range of naval activity recorded in the Pacific Fleet history: combat preparation, amphibious deployment, disaster relief, and evacuation support. The supplied history gives months or seasons for these two 1991 events rather than exact days. (U.S. Pacific Fleet command history)
Stephen T. Koehler is identified as the 38th commander since the Pearl Harbor headquarters was established in February 1941. The commander’s ordinal and the headquarters date measure institutional continuity across the Pacific Fleet’s modern headquarters era. They do not represent the number of commanders since the Pacific Squadron’s establishment in 1821. (U.S. Pacific Fleet command history)
Preserving naval history
The Naval Historical Center was established in 1971. Its activities were consolidated in 1982, when it moved into the Dudley W. Knox building complex. The Navy Art Collection became part of the Center in 1986, and the Naval Aviation History and Publication Division also joined in 1986. The Underwater Archaeology Branch was established in 1996. (NHHC Guide)
The Underwater Archaeology Branch was created to manage more than 2,500 Navy shipwrecks and also manages 14,000 aircraft wrecks. These inventories distinguish shipwrecks from aircraft wrecks and use “more than” for the shipwreck total, so 2,500 is a lower boundary rather than an exact count. (NHHC Guide)
Navy museums consolidated under the Center in 2005–2006. The Naval Historical Center was renamed NHHC on December 1, 2008, according to Naval Documents of the American Revolution, Volume 12. The NHHC Collection Management Facility formally opened in 2015. The sequence records organizational consolidation, a name change, and a later facility opening as separate milestones. (NHHC Guide; Naval Documents of the American Revolution Vol. 12)
Together, these figures show why naval history statistics need labels for time, place, and measurement type. Constitution’s 207-foot hull length is not the same measure as her 305-foot overall length; the Pacific Fleet’s 100-million-square-mile responsibility is not the same as its approximately 200 ships; and the Navy-wide total of 6,768 ships at the end of World War II is not a Pacific Fleet inventory. Those distinctions keep the numbers attached to the history they actually describe.