# How far can you see on the ocean on a clear day?

## How far can you see on the ocean on a clear day?

(Image credit: NOAA.) On a clear day, you can see for miles and miles and miles. The old saying turns out to be just about true. For a six-foot (182.88 centimeters) tall person, the horizon is a little more than 3 miles (5 kilometers) away.

How far can you see another ship on the ocean?

The sight is influenced by atmospheric refractive index. Eye height of 2 meters (7 feet) makes 5 kilometers sight (about 3 statute miles), which would be reasonable for a person on deck of a small ship.

How much far can human eye see?

The Earth curves about 8 inches per mile. As a result, on a flat surface with your eyes 5 feet or so off the ground, the farthest edge that you can see is about 3 miles away.

### How far can the human eye see in the ocean?

At sea level, it would be 4.7 km away. If we include another variable, in addition to the curvature of the earth (which essentially is constant), and increase the height of the observer, we most definitely can increase our maximum line of sight.

How far can a human hear?

The normal intelligible outdoor range of the male human voice in still air is 180 m (590 ft 6.6 in). The silbo, the whistled language of the Spanish-speaking inhabitants of the Canary Island of La Gomera, is intelligible under ideal conditions at 8 km (5 miles).

What light is invisible to the human eye?

Visible light has wavelengths ranging from about 400 nanometers to 700 nanometers. Wavelengths shorter than 400 nm, or longer than 700 nm, are invisible to the human eye.

## What animal can hear the farthest?

Researchers at the University of Strathclyde in Glasgow, Scotland have discovered that the greater wax moth (Galleria mellonella), a dull-colored, generally boring and common moth, has the most extreme hearing sense of any known animal.

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What is the loudest sound a human can make?

The loudest sound ever created by humans, not by natural causes, was said to be the atomic bomb blasts over Nagasaki and Hiroshima. Those clocked in at around 250 decibels. NASA’s highest recorded decibel reading was 204 and that was the first stage of the Saturn V rocket. 310 decibels is loud enough to kill you.

How far can the human eye see on the ocean?

If you stand on the beach, your eyes are probably between 5 and 6 feet above the sandy beach (depending on your height). From there you can see about 2.7 miles across the ocean.

### How far is the horizon at sea?

How far is the horizon at sea level? Also, the higher the observer’s eyes are from sea level, the farther away the horizon is from the observer. For instance, in standard atmospheric conditions, for an observer with eye level above sea level by 1.70 metres (5 ft 7 in), the horizon is at a distance of about 5 kilometres (3.1 mi).

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How far is the horizon from a beach?

So the distance to the horizon depends on the height of your eyes above the water. If your eyes are 8 inches (20 cm) above the water, the distance of the horizon is about 1 mile (1.6 km) away.