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Question

Difficulty: EasyNavigation and Cartography

In the navigation charts (stick charts) from the Marshall Islands, what is represented by the straight and curved sticks?

  1. A
    Paths of constellations used for star navigation
  2. B
    Literal routes showing precise nautical distances
  3. Patterns of ocean swells and wave currentsAnswer
  4. D
    Topographical depth contours of the sea floor

Answer

Patterns of ocean swells and wave currents
In Marshall Islands stick charts, the wooden sticks represent the patterns of ocean swells and wave currents, indicating how swell movements are altered by the presence of islands. Mariners studied these charts on land to memorize wave behaviors before embarking on voyages.

Step-by-Step Solution

1
Analyze the material composition and function of Marshall Islands stick charts.
The charts consist of a wooden framework of coconut fiber and sticks, representing the movement of water, and shells representing land.
This establishes that the sticks correspond to dynamic ocean currents rather than static geographical grid lines.
2
Differentiate between the symbolic representation of ocean swells and other navigation methods like celestial mapping or bathymetry.
The curved and straight sticks show how waves bend around islands, acting as a mnemonic device for mariners.
This identifies the correct option of ocean swells and wave currents.

Key Concept

Marshall Islands stick charts represent conceptual wave patterns and swell deflections used for open-ocean navigation.
Estimated Time:45s
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Topics

Navigation and Cartography

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