Early Navigation
Basic coastal and open-water navigation using landmarks and celestial observation.
Core metadata
- ID: early_navigation
- Era: Ancient
- First known date: -3000 (millennium)
- Region: Global / multiple regions
- Review status: source_checked
- Maturity: N/A
Prerequisites
Dependents
- Basic Cartography (basic_cartography)
- Navigation (navigation)
- Pack Animal Transport (pack_animal_transport)
Fields
- None.
Node sources
- History of astronomy (Encyclopaedia Britannica, 2026, textbook) • Supports: edge, node
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 2
- Average edge confidence: 72%
- Prerequisite sources: 1
- expert_inference: 2
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Sailing (sailing) | enabling | 68% | expert_inference | Sailing provides a capability that enables this technology without being the only possible path. | No sources recorded. |
| Early Astronomical Observation (early_astronomy_observation) | historical_predecessor | 75% | expert_inference | Early Astronomical Observation is an earlier historical predecessor or foundation, not a one-to-one engineering dependency. |
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This page is generated from canonical era JSON and is indexable by URL.