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North Mole, Gibraltar Harbour

North Mole, Gibraltar Harbour is a engineering 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 North Mole, Gibraltar Harbour rather than just read about it. In short: The North Mole is a breakwater located in the northern section of Gibraltar Harbour, in the British Overseas Territory of Gibraltar, at the southern end of the Iberian Peninsula. The North Mole, with the rest of harbour, is just north of the east entrance to the Strait of Gibraltar.

North Mole, Gibraltar Harbour — main illustration
North Mole, Gibraltar Harbour — illustration

Key takeaways

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

Reference excerpt

The North Mole is a breakwater located in the northern section of Gibraltar Harbour, in the British Overseas Territory of Gibraltar, at the southern end of the Iberian Peninsula. The North Mole, with the rest of harbour, is just north of the east entrance to the Strait of Gibraltar. The breakwater was formerly known as the Commercial Mole, and is the site of the commercial port in the harbour. It was the consequence of a late nineteenth century plan by the British Admiralty to create a modern dockyard and large defensive harbour in Gibraltar.

Infrastructure The North Mole at Gibraltar Harbour (pictured), in the British Overseas Territory of Gibraltar, at the southern end of the Iberian Peninsula, is one of a trio of breakwaters (shown on map) that provides protection to the harbour, in addition to that which results from the presence of the Rock of Gibraltar on its east side. The North Mole is positioned at the northern and western aspects of the northern section of the harbour, which is located just north of the east entrance to the Strait of Gibraltar. The L-shaped breakwater includes a Western Arm which runs south toward the Detached Mole, and measures 500 metres (1,600 ft) in length. The northern section of the harbour features the commercial port, which has a total length of almost 2,300 metres (7,500 ft) of quay on the North Mole (including its Western Arm) for cruise ships, cargo handling, and bunkering. Fifteen berths are available, including six on the Western Arm and two on an extension jetty. The south end of the Western Arm of the North Mole, its "D" Head, is the site of the Gibraltar North Mole Lighthouse (location shown on map). The black, octagonal, latticework tower is constructed of cast-iron. Its light characteristic is a quick, flashing red light, and it has a range of five nautical miles. The Elbow of the North Mole, its "E" Head, is the site of the Gibraltar North Mole Elbow Lighthouse. The grey, square, skeletal tower includes a round harbour control room. The light characteristic is a fixed red light, with a range of five nautical miles. Both lighthouses are operated by the Gibraltar Port Authority.

Early history The North Mole was formerly known as the Commercial Mole. It was a late nineteenth and early twentieth century extension of the Old Mole (shown on map), which was begun in 1618, and its extension, Devil's Tongue Battery, which was constructed between 1779 and 1783. By 1895, the government had drawn up plans to modernise Gibraltar Harbour. They included construction of a dry dock at the New Mole Parade, which had been built in 1620. The 1895 plan also included enclosing Gibraltar Harbour by extending the New Mole (shown on map) and constructing a Detached Mole. At that time, the method of enclosing the northern end of the harbour had not yet been decided and was a matter of some controversy. The extensive changes to Gibraltar Harbour were largely financed through Britain's Naval Works Act 1895 (58 & 59 Vict. c. 35). The plan that met with final approval of the Admiralty included construction of a dockyard and a modern defensive harbour, safe from torpedo attack. The Commercial Mole was an integral component of that defensive harbour as it formed its northern boundary, and was also planned to serve the commercial needs of Gibraltar. Some of the cost of that breakwater was shouldered by the colony of Gibraltar. The Commercial Mole was constructed of rubble stone and extended west from the area of the Waterport Wharf, Old Mole, and Devil's Tongue. The breakwater included five jetties which extended north and south; it ended in the Western Arm which paralleled the jetties. The jetties and Western Arm were lined with a concrete wharf wall. By 1902, much of the construction of the new Gibraltar Harbour had been completed, although portions were still under construction, including the extension of the New Mole. While the Commercial Mole was intended to facilitate Gibraltar commerce, by 1911 it was primarily used by the navy as a quay for destroyers.

Recent history

On the afternoon of 31 May 2011, the North Mole at Gibraltar Harbour was the site of an explosion involving an oil storage tank. Two workers had been welding on top of the tank. In addition to injuries sustained by the workers, one of whom was extensively burned, there were also injuries suffered by twelve passengers on the cruise ship Independence of the Seas, which had been berthed at the North Mole. An adjacent tank caught fire that evening, which required evacuation of the land-based fire fighters, limiting access to the fire from the sea. Following the fire, concern was expressed about the availability of adequate supplies of fire-fighting foam prior to the blaze at the North Mole. On 8 June 2012, a bunkering accident off the North Mole resulted in an oil spill, with the release of three tons of fuel into the sea. The refuelling operation had involved the ship Frio Dolphin and the bunker tanker Vemaoil XX. The Gibraltar Oil Spill Contingency Plan was activated and, by the following day, most of the spilled oil had been contained.

References

External links

Explosion at North Mole

Illustrations

North Mole, Gibraltar Harbour: View of the North Mole and its Western Arm at Gibraltar Harbour, from the Rock of Gibraltar, with Detached Mole at far left
View of the North Mole and its Western Arm at Gibraltar Harbour, from the Rock of Gibraltar, with Detached Mole at far left
North Mole, Gibraltar Harbour: Gibraltar Harbour with North Mole, Detached Mole, and South Mole
Gibraltar Harbour with North Mole, Detached Mole, and South Mole
North Mole, Gibraltar Harbour: Oil sullage tank continues burning through the night
Oil sullage tank continues burning through the night

Worked examples

Example 1 — a first encounter with North Mole, Gibraltar Harbour

Start with the simplest possible case. Write down what North Mole, Gibraltar Harbour claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, 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 North Mole, Gibraltar Harbour 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 North Mole, Gibraltar Harbour 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 North Mole, Gibraltar Harbour

In research
North Mole, Gibraltar Harbour appears in engineering 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 North Mole, Gibraltar Harbour 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
North Mole, Gibraltar Harbour is common in secondary-school and first-year university syllabi. It links to neighbouring topics Breakwaters, Buildings and structures in Gibraltar, so understanding it makes those chapters shorter.
In everyday life
Look for North Mole, Gibraltar Harbour 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 North Mole, Gibraltar Harbour in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what North Mole, Gibraltar Harbour means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain North Mole, Gibraltar Harbour out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is North Mole, Gibraltar Harbour in simple terms?

The North Mole is a breakwater located in the northern section of Gibraltar Harbour, in the British Overseas Territory of Gibraltar, at the southern end of the Iberian Peninsula. The North Mole, with the rest of harbour, is just north of the east entrance to the Strait of Gibraltar.

Why does North Mole, Gibraltar Harbour matter?

Because it connects several engineering 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 North Mole, Gibraltar Harbour?

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 North Mole, Gibraltar Harbour.

Tags

  • Breakwaters
  • Buildings and structures in Gibraltar

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