mathematics

MS Crown Iris

MS Crown Iris 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 MS Crown Iris rather than just read about it. In short: MS Crown Iris is a cruise ship owned by the Israeli cruise line Mano Maritime since 2018. She was originally ordered by Birka Line as MS Birka Queen from the Wärtsilä Marine Turku Shipyard in Finland, but completed by Kvaerner Masa-Yards as MS Royal Majesty for Majesty Cruise Line.

Key takeaways

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

Reference excerpt

MS Crown Iris is a cruise ship owned by the Israeli cruise line Mano Maritime since 2018. She was originally ordered by Birka Line as MS Birka Queen from the Wärtsilä Marine Turku Shipyard in Finland, but completed by Kvaerner Masa-Yards as MS Royal Majesty for Majesty Cruise Line. In 1997 she was sold to Norwegian Cruise Line as MS Norwegian Majesty and lengthened by 33.76 m (110 ft 9 in) at the Lloyd Werft shipyard in Bremerhaven, Germany. She was sold to Louis Cruises as MS Louis Majesty from 2008 to 2012 when she was chartered to Thomson Cruises as MS Thomson Majesty before being returned to Louis Cruises/Celestyal Cruises, as the Majesty. In 2018 the ship was sold to Mano Maritime.

Concept and construction Birka Queen was ordered by Birka Line for short cruises out of Stockholm as a running mate to MS Birka Princess. The ship was ordered from Wärtsilä Marine, but the shipyard went bankrupt in 1989. Operations were soon reorganized under the name of Masa-Yards, but the price of the ship was increased in the process, and Birka therefore refused to take delivery. Instead, the build contract was sold to Majesty Cruise Line, who took delivery of the ship on 2 July 1992, renaming her Royal Majesty. Due to her past, the ship has some features uncommon for cruise ships, such as the highest Finnish-Swedish ice class.

Service history

Following delivery, Royal Majesty set on her maiden voyage, a transatlantic crossing from Southampton to New York City, on 7 July 1992. She was christened in New York City on 21 July 1992 by Liza Minnelli. Following this, she was used on three- and four-night cruises out of Florida. In 1994 she initiated a new Northern Hemisphere summer season itinerary with cruises from Boston to St. George's, Bermuda, returning to Florida for the winter season.

On 10 June 1995, Royal Majesty grounded on Rose and Crown Shoal about 10 nautical miles (19 km) east of Nantucket Island, Massachusetts, and about 17 nmi (31 km) from where the watch officers thought the vessel was. Investigators found that the officers failed to act on visual cues about the vessel's location, over-relying on the automated bridge system. The vessel, with 1,509 persons on board, was en route from St. George's, Bermuda, to Boston, Massachusetts. There were no deaths or injuries as a result of this accident. Damage to the vessel and lost revenue, however, were estimated at $7 million. In August 1996 she participated in the Titanic Expedition Cruise, an expedition to the sinking site of RMS Titanic. Sailing from Boston, passengers spent five days circling the site with many celebrities and survivors from the famous ship onboard while parts of Titanic were being salvaged.

Majesty Cruise Line ceased operations at the end of the 1997 summer season, and Royal Majesty was sold to Norwegian Cruise Line. She was renamed Norwegian Majesty, and in 1999 she received a 33.76 m (110 ft 9 in) lengthening at the Lloyd Werft shipyard in Bremerhaven, Germany. Similar lengthenings had been carried out on NCL's Dreamward and Windward the previous year. The lengthening of the Norwegian Majesty however was more technically complicated than those of the other ships, as she had not been designed for such an operation.

In 2004 the ownership of Norwegian Majesty was transferred to NCL's parent company Star Cruises in preparation for potential transfer to the Star Cruises fleet or sale at a later date. She remained in NCL service without other changes. On 23 April 2008 Norwegian Majesty, was sold to the Cyprus-based Louis Cruise Lines. Louis Cruise Lines had reportedly outbid International Shipping Partners with their offer of $162 million. The deal was completed on 29 July 2008, but Norwegian Majesty was chartered back to Norwegian Cruise Line until October 2009. On 24 June 2009, Louis revealed that Norwegian Majesty would be renamed Louis Majesty. On 3 March 2010, three rogue waves hit Louis Majesty, killing two passengers, and injuring a number of others, while on a 12-day cruise around the Mediterranean. The waves, which were reportedly in excess of 26 feet (8 m) high, collided with the side of the vessel, smashing several windows in the saloon area. Water was taken on in the saloon area, which then drained down the decks below. The ship returned to port at Barcelona to receive repairs. Louis Majesty was chartered to Thomson Cruises from May 2012 and renamed Thomson Majesty. It sailed from Corfu in the summer and the Canary Islands in the winter. On 10 February 2013, while the ship was docked in Santa Cruz de la Palma in the Canary Islands, five crew members were killed and three others injured during a safety drill when the lifeboat they were in fell into the sea, trapping the occupants. Julian Bray, Marine Analyst in the UK, writing in the Cduck media news blog, confirms that crew were taking part in a training exercise to load, launch, and recover lifeboats, complete a regular risk/ safety programme and to ensure crew members have had recent practical training. Malta's Maritime Safety Investigation Unit subsequently issued a safety alert following the discovery of significant corrosion on the inner strands of the fall wire involved. The wire rope had parted approximately where it rested over the topmost sheave, when the davit was in its stowed position. The fore and aft davit's fall wires had been replaced on 22 August 2010 and the next scheduled replacement was due in August 2014. In her later career with Thomson Cruises, she was given a refit adding several balcony cabins to the ship. In November 2017 she joined "Celestyal Cruises" and renamed simply as "Majesty".

Service as Crown Iris

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with MS Crown Iris

Start with the simplest possible case. Write down what MS Crown Iris 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 MS Crown Iris 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 MS Crown Iris 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 MS Crown Iris

In research: MS Crown Iris 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 MS Crown Iris 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: MS Crown Iris is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1991 ships, IMO numbers, Maritime incidents in 2010, so understanding it makes those chapters shorter.
In everyday life: Look for MS Crown Iris 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 MS Crown Iris in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what MS Crown Iris 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 MS Crown Iris out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is MS Crown Iris in simple terms?

Why does MS Crown Iris 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 MS Crown Iris?

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 MS Crown Iris.