When a Kumejima Ocean Jet sailing is canceled due to rough seas, purchased tickets are generally refunded in full. Cancellations are most likely during typhoon season (July–October) and when waves exceed 2 meters. Alternative transport includes RAC flights (~30 min, ~¥9,000) and Kumeshosen ferry (3–4 hours). Check ko-jet.com for real-time operating status.
Cancellation Criteria
The jetfoil “Tsumugi” may be suspended when wave height exceeds 2 meters or wind speed exceeds 15 m/s. The highest-risk periods are typhoon season (July–October) and winter northerly winds (December–February). Check the official website (ko-jet.com) or the departure port information board on the day of travel.
Refund Procedure
When a sailing is canceled due to the operator (rough weather, maintenance, etc.), purchased tickets are generally refunded in full. Specific refund procedures will be announced on the official website after the service launches on May 1, 2026. Always check the cancellation policy when making your reservation (see the Booking Guide).
Alternative Transport Options
If the jetfoil is canceled, you have two alternatives. RAC flights (Naha Airport → Kumejima Airport, ~30 minutes, from ~¥9,000) operate regardless of sea conditions and are the most reliable option. Kumeshosen ferry (Tomari Wharf → Kaneshiro Port, ~3–4 hours) is a larger vessel that may still operate when the jetfoil is canceled, though it too will be suspended during direct typhoon approaches.
FAQ
Q: Will I get an automatic refund if a typhoon cancels my sailing?
A: Cancellations due to operator circumstances generally result in a full refund. Specific procedures will be announced after the May 2026 launch.
Q: Can the ferry still run when the jetfoil is canceled?
A: Yes — the Kumeshosen ferry is larger and more resistant to rough seas, so it may operate even when the jetfoil is suspended. However, all services are canceled during direct typhoon approaches.
久米島オーシャンジェット お問い合わせ
那覇ふ頭営業所: 098-861-0877
久米島（兼城港）: 098-985-7890
公式サイト: ko-jet.com
