🛠️ Invention or technique

First bathymetric map of the North Atlantic (Maury)

Primer mapa batimétrico del Atlántico Norte (Maury)

Date
1853-1854 · confidence medium
Place
US Naval Observatory, Washington, D.C., United States
Credited to
Matthew Fontaine Maury and John Mercer Brooke
Field
Cosmos & Earth

What it is

A map of the relief of the North Atlantic floor from deep-sea soundings using Brooke's sounding device, revealing a plateau between Ireland and Newfoundland suitable for laying a cable. It was the first cartographic glimpse of the ocean floor.

The soundings of the time have limited reliability (lines drifted); the map is the first, but it is not accurate cartography.

What it led to

  • laying of the first transatlantic cable
  • a boost for sounding campaigns such as the Challenger's
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Sources✓ verified 2026-11-06