United States Navy Hull Classification Codes
The U.S. Navy's system of alpha-numeric ship designators, and its associated hull numbers, have been for several decades a unique method of categorizing ships of all types: combatants, auxiliaries and district craft. Though considerably changed in detail and expanded over the years, this system remains essentially the same as when formally implemented in 1920. It is a very useful tool for organizing and keeping track of naval vessels, and also provides the basis for the identification numbers painted on the bows (and frequently the sterns) of most U.S. Navy ships.
The ship designator and hull number system's roots extend back to the late 1880s, when ship type serial numbers were assigned to most of the new-construction warships of the emerging "Steel Navy". During the course of the next thirty years, these same numbers were combined with filing codes used by the Navy's clerks to create an informal version of the system that was put in place in 1920. Limited usage of ship numbers goes back even earlier, most notably to the "Jeffersonian Gunboats" of the early 1800s and the "Tinclad" river gunboats of the Civil War Mississippi Squadron.
It is important to understand that hull number letter prefixes are not acronyms, and should not be carelessly treated as abbreviations of ship type classifications. Thus, "DD" does not stand for anything more than "Destroyer". "SS" simply means "Submarine". And "FF" is the post-1975 type code for "Frigate."
The hull classification codes for ships in active duty in the United States Navy are governed under Secretary of the Navy Instruction 5030.8A (SECNAVINST 5030.8A).
Read more about this topic: Hull Classification Symbol
Famous quotes containing the words united states, united, states, navy and/or codes:
“What lies behind facts like these: that so recently one could not have said Scott was not perfect without earning at least sorrowful disapproval; that a year after the Gang of Four were perfect, they were villains; that in the fifties in the United States a nothing-man called McCarthy was able to intimidate and terrorise sane and sensible people, but that in the sixties young people summoned before similar committees simply laughed.”
—Doris Lessing (b. 1919)
“You may consider me presumptuous, gentlemen, but I claim to be a citizen of the United States, with all the qualifications of a voter. I can read the Constitution, I am possessed of two hundred and fifty dollars, and the last time I looked in the old family Bible I found I was over twenty-one years of age.”
—Elizabeth Cady Stanton (1816–1902)
“Action from principle, the perception and the performance of right, changes things and relations; it is essentially revolutionary, and does not consist wholly with anything which was. It not only divides States and churches, it divides families; ay, it divides the individual, separating the diabolical in him from the divine.”
—Henry David Thoreau (1817–1862)
“I wish to reiterate all the reasons which [my predecessor] has presented in favor of the policy of maintaining a strong navy as the best conservator of our peace with other nations and the best means of securing respect for the assertion of our rights of the defense of our interests, and the exercise of our influence in international matters.”
—William Howard Taft (1857–1930)
“We must trust infinitely to the beneficent necessity which shines through all laws. Human nature expresses itself in them as characteristically as in statues, or songs, or railroads, and an abstract of the codes of nations would be an abstract of the common conscience.”
—Ralph Waldo Emerson (1803–1882)