Hawaii imports between 85 and 90 percent of its food by ship. The Maldives imports virtually 100 percent of its staple food supply. Malta imports approximately 80 percent of its food. The Cayman Islands, Bermuda, and most Caribbean island nations import the majority of their food, fuel, and pharmaceutical supplies through single-port infrastructure with no viable alternative delivery mechanism.
This is supply chain singularity — ISPI's term for the structural condition of island communities where the supply chain has no geographic redundancy. And it is the most consequential emergency preparedness gap in island communities worldwide.
Continental supply chain resilience policy is built on the assumption that geographic redundancy exists — that when a Gulf Coast port closes, cargo reroutes through Atlantic ports, that when a distribution center is damaged, alternative centers cover the region. Island supply chains cannot reroute. When the port is disrupted, the supply chain stops. There is no Plan B.
What supply chain singularity means in practice
A 2018 fire at Honolulu's Sand Island terminal disrupted port operations for approximately three days. Measurable retail shortages in perishable food categories appeared within 48 hours. Supply normalization took significantly longer because just-in-time inventory systems in island retail do not maintain buffer stocks adequate to absorb even brief disruptions.
A three-day port disruption in Los Angeles produces inconvenience. A three-day port disruption in Honolulu, Nassau, Valletta, or Malé produces food security consequences. A sustained disruption — the kind produced by a major hurricane, earthquake, or infrastructure failure — produces consequences that last weeks, not days.
FEMA's household preparedness guidance recommends 72-hour emergency reserves. ISPI's research recommends a minimum 30-day community reserve standard for island communities — not as household preparedness, but as community-level strategic reserve architecture. The 2017 Hurricane Maria devastation of Puerto Rico, where supply disruption lasted weeks, is the most thoroughly documented empirical basis for this standard.
The policy response
Solving supply chain singularity requires policy interventions at three levels. Community reserve architecture — pre-positioned strategic reserves of food, pharmaceuticals, fuel, and medical supplies at 30-day capacity. Port infrastructure resilience — hardening primary port facilities against the emergency events most likely to disrupt them, and developing secondary landing capacity where feasible. Supply chain diversification — reducing single-source dependency for critical goods through procurement policy that incentivizes multiple supplier relationships.
ISPI's Supply Chain Security and Community Resilience white paper addresses all three levels with frameworks applicable to island communities worldwide. The full paper is available as a free download. Government agencies and corporations commissioning island supply chain security research can contact ISPI at ISPIGlobal@proton.me. The Supply Chain FAQ answers the most common policy questions directly.