Marshall Islands · Structural Craft / Navigational Craft

Marshall Islands Stick Chart Navigation Craft

Rebbelib / Mattang — Marshall Islands Wa Joraan

The Marshall Islands stick chart making tradition — the production of the distinctive Marshall Islands navigational instruments (rebbelib and mattang) woven from coconut palm midribs and cowrie shells that encode Pacific Ocean swell patterns for inter-island navigation, representing the most sophisticated traditional navigational craft object in the Pacific. The Marshall Islands ri-meto (wave pilot) reads the stick chart construction quality through a tension-and-tautness assessment — checking the woven midrib frame and reading the specific taut flexibility that indicates correct lashing tension.

Risk level: Critically Endangered · Not listed; Marshall Islands navigation tradition on the national heritage inventory; on the Pacific UNESCO tentative list

Alternate Names
Stick chart; rebbelib; mattang; meto; Marshall Islands navigation; wave chart; coconut palm weaving; traditional navigation
Geographic Center
Marshall Islands broadly — the ri-meto (wave pilot) tradition distributed across the atolls; the Alele Museum and Public Library Majuro; the traditional navigation community
Community / Ethnic Group
Marshallese — the ri-meto (wave pilot) community who held the stick chart knowledge
Estimated Origin
Ancient Micronesian period (Marshall Islands stick chart navigation documented from earliest European contact; the tradition believed to be thousands of years old — representing the most sophisticated traditional navigational knowledge in the Pacific)
Cultural Function
Marshall Islands stick charts are the most intellectually complex craft objects in the Pacific section of the CRAFT archive — the rebbelib (large regional chart) encodes the specific patterns of ocean swells refracted and deflected by the island chain; the shells mark island positions; a ri-meto navigating by feel (lying in the hull to sense swell patterns through the hull) could cross hundreds of kilometers of open ocean using only the swell information encoded in the chart; the knowledge was historically restricted to specific ri-meto families and nearly died out in the 20th century
Primary Materials
Coconut palm midribs (the dried midribs of coconut palm fronds — the specific springy-yet-firm material that allows the stick chart to be read by feel as well as by eye); cowrie shells (marking island positions)
Primary Tools
Midrib preparation tools; coconut sennit lashing; the pressing finger (for the 2-second tension-and-tautness junction assessment)
Process Overview
Midribs prepared; swell pattern geometry laid out; sennit lashing at junctions; 2-second tension-and-tautness per junction; correct firm response = complete chart; shells attached at island positions
Traditional Applications
Pacific inter-island navigation (ancient Micronesian)
Contemporary Applications
Heritage collector; Pacific navigational knowledge revival; UNESCO potential inscription
Notable Practitioners
Fewer than 10 active ri-meto; Alele Museum heritage practitioners
Key References
Alele Museum Majuro; Marshall Islands navigational heritage literature
Verification Status
Partially Verified

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