The list of ship commissionings in 1873 includes a chronological list of all ships commissioned in 1873.
| Date | Operator | Ship | Pennant | Class and type | Notes |
|---|---|---|---|---|---|
| July 17 |  Imperial Brazilian Navy | Trajano | Cruiser | ||
| October 1 |  Austro-Hungarian Navy | Frundsberg | Corvette | [1] | |
| October 29 |  United States Revenue Cutter Service | George S. Boutwell | Revenue cutter | [2] | |
| Unknown |  Royal Norwegian Navy | Rap | Torpedo boat |
 |
The Royal Norwegian Navy is the branch of the Norwegian Armed Forces responsible for naval operations of Norway. As of 2008, the Royal Norwegian Navy consists of approximately 3,700 personnel and 70 vessels, including 4 heavy frigates, 6 submarines, 14 patrol boats, 4 minesweepers, 4 minehunters, 1 mine detection vessel, 4 support vessels and 2 training vessels. It also includes the Coast Guard.
A ship prefix is a combination of letters, usually abbreviations, used in front of the name of a civilian or naval ship that has historically served numerous purposes, such as identifying the vessel's mode of propulsion, purpose, or ownership/nationality. In the modern environment, prefixes are cited inconsistently in civilian service, whereas in government service a vessel's prefix is seldom omitted due to government regulations dictating that a certain prefix be used. Today the common practice is to use a single prefix for all warships of a nation's navy, and other prefixes for auxiliaries and ships of allied services, such as coast guards. For example, the modern navy of Japan adopts the prefix "JS" – Japanese Ship. However, not all navies use prefixes. Among the blue-water navies, those of France, Brazil, China, Russia, Germany, and Spain do not use ship prefixes. NATO designations such as FS, FGS, and SPS can be used if needed.
USS Alexander Hamilton may refer to the following ships operated by the United States government:
The United States Revenue Cutter Service was established by an act of Congress on 4 August 1790 as the Revenue-Marine upon the recommendation of Secretary of the Treasury Alexander Hamilton to serve as an armed customs enforcement service. As time passed, the service gradually gained missions either voluntarily or by legislation, including those of a military nature. It was generally referred to as the Revenue-Marine until 31 July 1894, when it was officially renamed the Revenue Cutter Service. The Revenue Cutter Service operated under the authority of the U.S. Department of the Treasury. On 28 January 28 1915, the service was merged by an act of Congress with the United States Life-Saving Service to form the United States Coast Guard.
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The Indian Coast Guard (ICG) is a maritime law enforcement and search and rescue agency of India with jurisdiction over its territorial waters including its contiguous zone and exclusive economic zone. It was formally established on 1 February 1977 by the Coast Guard Act, 1978 of the Parliament of India. It operates under the Ministry of Defence.
USS Muskegon (PF-24), a Tacoma-class frigate, was the first ship of the United States Navy to be named for Muskegon, a city on Michigan's west coast.
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Porbandar Airport is a public airport in Porbandar, Gujarat, India. Currently, civilian flights are not operational. Apart from civilian operations it also has a military presence in the form of INAS 343 of the Indian Navy and CGAE Porbandar of the Indian Coast Guard. A new terminal building was opened in April 2008. There are currently no scheduled passenger flights from the airport.
USCGC Yamacraw (WARC-333) was a United States Coast Guard Cable Repair Ship. The ship was built for the Army Mine Planter Service as U. S. Army Mine Planter Maj. Gen. Arthur Murray (MP-9) delivered December 1942. On 2 January 1945 the ship was acquired by the Navy, converted to an Auxiliary Minelayer and commissioned USS Trapper (ACM-9) on 15 March 1945. Trapper was headed to the Pacific when Japan surrendered. After work in Japanese waters the ship headed for San Francisco arriving there 2 May 1946 for transfer to the Coast Guard.
USS Guard was a fourth-class ship-rigged sailing vessel, armed with four 8-inch (203 mm) Dahlgren guns and one 21-pdr howitzer, acquired by the Union Navy during the American Civil War.
China Coast Guard, colloquially recognized as the Haijing (海警), is the maritime security, search and rescue, and law enforcement service branch of the People's Armed Police of China. It is currently the world's largest coast guard.
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The Casco class was a large class of United States Coast Guard cutters in commission from the late 1940s through the late 1980s. They saw service as weather reporting ships in the Atlantic and Pacific Oceans until the early 1970s, and some saw combat service during the Vietnam War.
Lieutenant (abbreviated Lt, LT (U.S.), LT(USN), Lieut and LEUT, depending on nation) is a commissioned officer rank in many English-speaking nations' navies and coast guards. It is typically the most senior of junior officer ranks. In most navies, the rank's insignia may consist of two medium gold braid stripes, the uppermost stripe featuring an executive curl in many Commonwealth of Nations; or three stripes of equal or unequal width.
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The United States Coast Guard Pipe Band is a pipe band and private military unit composed of current and former United States Coast Guard personnel. Though a privately maintained entity, it is formally recognized by the U.S. Coast Guard and provides support to official Coast Guard ceremonies including changes-of-command, funerals, and ship commissioning. The unit was established in 2001 and formally recognized by the U.S. Coast Guard as a Coast Guard-affiliated organization the following year.