mathematics

USNS Observation Island

USNS Observation Island is a mathematics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand USNS Observation Island rather than just read about it. In short: USNS Observation Island (T-AGM-23) was built as the Mariner-class merchant ship Empire State Mariner for the United States Maritime Commission, launched 15 August 1953, and operated by United States Lines upon delivery on 24 February 1954, making voyages for the Military Sea Transportation Service (MSTS) until going into reserve at Mobile, Alabama on 9 November 1954. Title was transferred to the United States Navy o…

Key takeaways

USNS Observation Island belongs to mathematics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect USNS Observation Island to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of USNS Observation Island from memory before moving on to harder problems.

Reference excerpt

USNS Observation Island (T-AGM-23) was built as the Mariner-class merchant ship Empire State Mariner for the United States Maritime Commission, launched 15 August 1953, and operated by United States Lines upon delivery on 24 February 1954, making voyages for the Military Sea Transportation Service (MSTS) until going into reserve at Mobile, Alabama on 9 November 1954. Title was transferred to the United States Navy on 10 September 1956 and, after conversion, the ship was renamed Observation Island. On commissioning the ship was classified as the "experimental miscellaneous auxiliary" (EAG), USS Observation Island (EAG-154) supporting fleet ballistic missile development. Observation Island was the platform for the first at-sea firing of the Polaris missile in 1959. On 1 April 1968, Observation Island was redesignated as a miscellaneous auxiliary USS Observation Island (AG-154). She was the platform for the first at-sea firing of the Poseidon missile in 1969. Observation Island was decommissioned and placed in reserve from 1972 until 1977 in the Suisun Bay Reserve Fleet until withdrawn and then returned in 1978. The ship was permanently withdrawn April 1979 and placed in service with MSTS successor, the Military Sealift Command (MSC). The ship was classified in 1979 as the missile range instrumentation ship USNS Observation Island (T-AGM-23). Observation Island operated worldwide and monitored compliance with strategic arms treaties and supported U.S. military weapons test programs. Observation Island carried the United States Air Force AN/SPQ-11 Cobra Judy passive electronically scanned array radar system for collecting data on missile tests. The ship was operated by MSC for the Air Force Technical Applications Center at Patrick Air Force Base. The ship served the MSC until her inactivation 25 March 2014 after her mission was taken over by USNS Howard O. Lorenzen.

As Empire State Mariner

Empire State Mariner was laid down as a Type C4 / Mariner-class high speed cargo ship 15 September 1952 by the New York Shipbuilding Corporation, Camden, New Jersey; launched as Empire State Mariner 15 August 1953; sponsored by Mrs. Samuel C. Waugh; and delivered to the Maritime Administration and the United States Lines for operation under General Agency Agreement 24 February 1954. Empire State Mariner, Capt. V. R. Arkin, Master, made three voyages for Military Sea Transportation Service. The first two took her to Bremerhaven and Liverpool. The third, commencing in May 1954, took her along both the east and west coasts, as well as to the Panama Canal Zone, Guam, Korea, and Japan. She returned to Mobile, Alabama in September 1954, and entered the National Defense Reserve Fleet 9 November 1954. Empire State Mariner transferred to the Navy 10 September 1956 with three other Mariner class ships.

US Navy service history

Her conversion to the first naval ship having a fully integrated Fleet Ballistic Missile System was authorized 15 October 1957, and partial completion of the project was accomplished at Norfolk Naval Shipyard, Portsmouth, Virginia. before she commissioned 5 December 1958 as Observation Island (EAG-154). During the conversion, there were no major hull or engineering changes made other than installation of a roll stabilization system. However, extensive alterations were accomplished in the superstructure and hold areas so as to accommodate the Fleet Ballistic Missile (FBM) Weapons System. Observation Island departed her homeport of Norfolk 3 January 1959, underwent shakedown at Guantanamo Bay, and then operated on the Atlantic Missile Range off Cape Canaveral, conducting dummy missile launches and communications tests. In March 1959, Observation Island returned to Norfolk Naval Shipyard for installation of additional equipment, including the Ships Inertial Navigation System (SINS). In June she steamed for her new homeport, Port Canaveral, Florida, and made preparations for the first at-sea launch of a Polaris missile. Designated UGM-27, the missile was successfully launched from Observation Island 27 August 1959. Following this milestone, Observation Island returned to Norfolk Naval Shipyard for installation of a fire control system to enable her to launch more sophisticated guided versions of new generation Polaris missiles. She also received a new launcher, the developmental prototype of those installed in the ballistic missile submarines. This work was completed in January 1960 and Observation Island returned to Port Canaveral to continue Polaris test launch operations. After a total of six launchings, the ship commenced support of Polaris launchings from submarines. She provided optical and electronic data gathering services, and acted as communications relay station between submerged submarines and the supervisor of range operations at the Cape. The first successful fully guided Polaris missile launching from a submerged submarine took place 20 July 1960 from USS George Washington (SSBN-598). Through October Observation Island also supported launches from USS Patrick Henry (SSBN-599).

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with USNS Observation Island

Start with the simplest possible case. Write down what USNS Observation Island claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to USNS Observation Island before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about USNS Observation Island ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of USNS Observation Island

In research: USNS Observation Island appears in mathematics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses USNS Observation Island in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: USNS Observation Island is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1953 ships, IMO numbers, Maritime vessels related to spaceflight, so understanding it makes those chapters shorter.
In everyday life: Look for USNS Observation Island outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study USNS Observation Island in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what USNS Observation Island means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain USNS Observation Island out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is USNS Observation Island in simple terms?

Why does USNS Observation Island matter?

Because it connects several mathematics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study USNS Observation Island?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on USNS Observation Island.