mathematics

MV Selendang Ayu

MV Selendang Ayu 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 MV Selendang Ayu rather than just read about it. In short: MV Selendang Ayu, IMO number: 9145528, was a Malaysian-registered Panamax bulk cargo ship chartered by the IMC Group. It ran aground off Unalaska Island in western Alaska's Aleutian Islands on 8 December 2004 after its engine failed.

Key takeaways

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

Reference excerpt

MV Selendang Ayu, IMO number: 9145528, was a Malaysian-registered Panamax bulk cargo ship chartered by the IMC Group. It ran aground off Unalaska Island in western Alaska's Aleutian Islands on 8 December 2004 after its engine failed. Six crew members died when a rescue helicopter was engulfed by a breaking wave; the ship broke in two, resulting in a large oil spill.

Final voyage On 28 November 2004, Selendang Ayu left Seattle, Washington, bound for Xiamen, China. On board was a cargo of 60,200 tonnes (66,400 tons) of soybeans, along with 1,000 tonnes (1,100 tons) of fuel oil. Arrival in China was scheduled for 17 December but the ship was running at reduced speed due to high winds and heavy seas. After the ship had sailed through Unimak Pass, the ship's engine malfunctioned and was shut down, at around noon on 6 December. At this point, the ship was 46 miles (74 km) north-west of Bogoslof Island and around 100 miles (160 km) from Dutch Harbor, the nearest port. The cause of the engine failure was found to be a cracked liner in the no. 3 cylinder and the ship's engineers decided to isolate that cylinder, restart the engine using the five remaining cylinders and sail to Dutch Harbor, where the defective cylinder could be repaired. By 21:00, the no. 3 cylinder had been isolated but the engine could not be restarted. At this time, the wind was Beaufort force 8, from the north-west, and the ship was drifting towards land at about 1.6 knots (3.0 km/h; 1.8 mph). The following morning, it was discovered that four of the engine's cylinders also had cracked piston rings. It was decided to replace the worst of these and make another attempt to restart the engine. By now, the sustained wind speed was around 30 knots (56 km/h; 35 mph) and the ship was drifting at 1.8 knots (3.3 km/h; 2.1 mph) in 15 foot (4.6 m) seas. At 11:00, the US Coast Guard cutter Alex Haley arrived on the scene and was standing by. The no. 6 cylinder head, weighing 3,300 pounds (1,500 kg) was removed and lashed to the deck but worsening weather and the ship's roll prevented any more work on the engine for the next 18 hours. Fuel was transferred to inboard tanks to reduce the likelihood of a spill if the ship should run aground. During the afternoon, the ship drifted past Bogoslof Island at a distance of around 3 miles (4.8 km). The ocean-going tug Sidney Foss arrived after sunset at 18:30 and a line was attached. However, with winds now at 45–55 knots (83–102 km/h; 52–63 mph) and waves of 25 feet (7.6 m), the tug was only able to slow the vessel's drift. A second tug, James Dunlap was hired from Dutch Harbor, with the intention of attaching a towline from the tug to Selendang Ayu's stern so the stricken freighter could be turned to face into the wind, allowing it to be towed away from Unalaska Island. However, soon after James Dunlap arrived, the tow-line from Sidney Foss parted at 07:30 on 8 December and the weather made it impossible to re-establish the tow. At 11:15, the ship passed into water shallow enough for its anchors to be used. One anchor was dropped and this halted the ship for around an hour, until the wind worsened and the ship began to drift towards the shore again. The starboard anchor could not be lowered as the port anchor had wrapped around the bow of the ship. Alex Haley tried to attach a towline to turn the ship and allow the second anchor to be dropped but this also failed.

Rescue Two HH-60J Jayhawk helicopters had been sent from Coast Guard Air Station Kodiak to Cold Bay to rescue Selendang Ayu's crew, if necessary. At 14:00 on 8 December, the first of these helicopters began to winch nine of the ship's crew from the deck and, 50 minutes later, began to lower them to the deck of Alex Haley while the second Jayhawk began to pick up nine more crew members and transferred them ashore. This left seven senior officers and one deck cadet on board the ship, which had now managed to lower its starboard anchor. Work on the engine continued but the ship ran aground at 17:05. One of the Jayhawks returned to evacuate the remaining crew and, by 18:15, only the master and a Coast Guard rescue swimmer were still to be lifted off the ship. A rogue wave broke over the ship's bow and the helicopter was engulfed in spray. Its engines flamed out from water ingestion and the helicopter crashed into the sea and sank. Alex Haley's HH-65B Dolphin was airborne and was able to rescue the three members of the Jayhawk's crew but only one of the seven members of the ship's crew. There was no sign of the remaining six men so the Dolphin took the rescued crew ashore. At 19:15, Selendang Ayu broke in two; the master and the Coast Guard swimmer were safely recovered at 20:35. Two crewmembers of the Dolphin helicopter, CGNR 6513, were decorated for their actions in this rescue: AST3 Aaron Bean with the Meritorious Service Medal and AMT3 Gregory Gibbons with the Distinguished Flying Cross. The Coast Guard searched unsuccessfully for the remaining crew until their efforts were called off on 10 December.

Impact The ship had been carrying a significant amount of fuel, so there were fears that Selendang Ayu could create the worst Alaskan oil spill since Exxon Valdez. One tank containing 40,131 US gallons (151,910 L) of fuel ruptured when the ship broke apart. It is estimated that 424,000 US gallons (1,610,000 L) of heavy bunker C fuel oil and 18,000 US gallons (68,000 L) of diesel fuel were on board when she grounded. Ultimately, 350,000 US gallons (1,300,000 L) of bunker oil and diesel spilled, which is about 2.9% of the volume of crude oil spilled from Exxon Valdez. The crew had transferred the fuel to internal tanks when the ship foundered, and heaters were turned off so that the fuel would thicken in the cold waters. However, environmental officials estimate that up to 1.28 million liters of thick fuel oil (338,000 US gallons (1,280,000 L)) leaked from the freighter. The carcasses of over 1,600 birds and 6 sea otters were recovered from beaches along the western shore of Unalaska Island after the spill.

Notes

External links

State of Alaska incident report Crew describes rescue mission. Archived 16 December 2004 at the Wayback Machine Anchorage Daily News. More Oil Spilled than first estimated CBC Maritimequest Selendang Ayu Photo Gallery National Transportation Safety Board Report Wreck Site entry

Illustrations

Worked examples

Example 1 — a first encounter with MV Selendang Ayu

Start with the simplest possible case. Write down what MV Selendang Ayu 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 MV Selendang Ayu 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 MV Selendang Ayu 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 MV Selendang Ayu

In research: MV Selendang Ayu 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 MV Selendang Ayu 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: MV Selendang Ayu is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1998 ships, 2004 in Alaska, Aleutians West Census Area, Alaska, so understanding it makes those chapters shorter.
In everyday life: Look for MV Selendang Ayu 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 MV Selendang Ayu in 20 minutes

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

Frequently asked questions

What is MV Selendang Ayu in simple terms?

Why does MV Selendang Ayu 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 MV Selendang Ayu?

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 MV Selendang Ayu.