In 1899 Nero Deep (31,693 feet [9,660 metres]) was discovered southeast of Guam. That sounding was not exceeded until a 32,197-foot (9,813-metre) hole was found in the vicinity 30 years later. In 1957, during the International Geophysical Year, the Soviet research ship Vityaz sounded a new world… Read More

Mariana Trench (Marianas Trench), deepest of the world’s deep-sea trenches. It stretches for more than 1,580 miles (2,540 km) with a mean width of 43 miles (69 km) and is part of the western Pacific system of oceanic trenches coinciding with subduction zones.

The fourth dive in the Nekton series was a very deep dive into the Nero Deep of the Marianas Trench. This deep had been discovered in 1899 by the USS Nero (AC-17) in a search for a deep sea cable route to the orient. It was dive 61 in a long series of bathyscaphe dives supervised by Jacques Piccard.

In 1899 the USS Nero recorded a depth of 31,693 feet southeast of Guam. This was the greatest depth recorded on earth at the time. Since then, the deepest sounding for the Marianas Trench has been recorded at 35, 463 feet and remains the greatest depth on earth.

2020年8月26日 · He has piloted Limiting Factor to the deepest points in the five named ocean basins as well as the first, second, and third deepest points on the seafloor – the Challenger, Horizon, and Nero Deeps. So why is it important to know how deep this trench is?

为一条洋底弧形洼地，延伸逾2,550公里(1,580哩)，平均宽69公里(43哩)。 主海沟底部有较小陡壁谷地。1899年， 关岛 东南发现内罗海渊（Nero Deep），深度为9,660米。这一纪录直到30年后附近发现9,814米深渊之后才被超过。

It is the deepest such trench known on Earth and thus the deepest known point in the ocean. More than 35,000 feet (10,500 meters) deep at its deepest point, the Mariana Trench is far lower than the lowest point on land, the Dead Sea. The trench is deeper than Mount Everest is high.

On 8 January 1960, Piccard and I made a record dive to 23,000 feet in the Nero Deep. Everything worked well. Therefore, on the 19th, the Trieste was towed out of Apra Harbor to begin the slow 200-mile trip to the Challenger Deep dive site.

The cosmos spreads out pursuing the deep universe; so the ocean divulges its known depths torturing a sailor’s mind into whirlpools. Twenty-seven-thousand tons of steel manned by average swabbies entirely overmatched without the captain in the bridge and in control.

Excellent for general-purpose sketching and drawing when a dense black line is needed, the Cretacolor Nero Deep Black Pocket Set and pencils produce a shiny black, smudge proof stroke that is water resistant.