Which navigational system uses a horizon-based 32-house scheme for tracking star rise and set?

Which navigational system uses a horizon-based 32-house scheme for tracking star rise and set?

• A. Polynesian star compass
• B. Solar compass
• C. Magnetic needle device
• D. A mental map dividing the horizon into 32 houses to track rising and setting points of stars for direction

Answer: (D)

The idea being tested is how navigators use the sky to find direction by anchoring it to the horizon itself. In this system, the horizon is divided into 32 distinct sectors, or “houses,” and each star’s rising and setting points map to one of those sectors. By memorizing which stars rise or set in which parts of the horizon, a navigator can keep a sense of direction across long sea voyages, even without sight of land or a clear sky. This horizon-based, star-tracking method is characteristic of the Polynesian star compass, a mental map that organizes direction around the horizon rather than relying on the sun or a magnetic needle. The other options involve different cues—sun position or magnetism—but they don’t use a 32-sector horizon map tied to star rise and set, which is why this description fits the Polynesian star compass best.

The idea being tested is how navigators use the sky to find direction by anchoring it to the horizon itself. In this system, the horizon is divided into 32 distinct sectors, or “houses,” and each star’s rising and setting points map to one of those sectors. By memorizing which stars rise or set in which parts of the horizon, a navigator can keep a sense of direction across long sea voyages, even without sight of land or a clear sky. This horizon-based, star-tracking method is characteristic of the Polynesian star compass, a mental map that organizes direction around the horizon rather than relying on the sun or a magnetic needle. The other options involve different cues—sun position or magnetism—but they don’t use a 32-sector horizon map tied to star rise and set, which is why this description fits the Polynesian star compass best.