The Kumejima Ocean Jet (82 min, ¥7,800) and Kumeshosen ferry (3–4 hrs, ¥3,450) both connect Naha to Kumejima. The jetfoil is 3× faster with minimal seasickness, while the ferry is cheaper and allows vehicle transport. Choose KOJ for speed and comfort; choose Kumeshosen for budget travel or bringing a car.
Speed & Time
The KOJ jetfoil completes the Naha–Kumejima route in approximately 82 minutes, compared to 3–4 hours by Kumeshosen ferry. For day trips, this time difference is decisive — KOJ makes same-day round trips practical.
Fare Comparison
The Kumeshosen ferry costs ¥3,450 one-way (adult), less than half the KOJ fare of ¥7,800. However, when factoring in the time saved (2+ hours each way), the KOJ represents strong value for travelers on tight schedules.
Comfort & Seasickness
The jetfoil rides above the waves on hydrofoils, producing significantly less motion than a conventional ferry. Seasickness is rare on the KOJ. The Kumeshosen ferry, while comfortable for its class, is subject to ocean swells, especially in winter and typhoon season. See our seasickness guide for details.
Vehicle Transport
Only the Kumeshosen ferry can carry vehicles. The KOJ jetfoil is passenger-only. If you need a car on Kumejima, either ship it by ferry or rent locally at Kaneshiro Port.
When choosing between Kumejima Ocean Jet and the conventional Kumeshosen ferry for travel to Kumejima Island, the key differences are speed, comfort, and cost. The Ocean Jet jetfoil completes the journey in approximately 82 minutes at ¥7,800 per adult, while the Kumeshosen ferry takes approximately 3 hours 30 minutes at approximately ¥3,450 per adult. The jetfoil is roughly twice the price but saves nearly 2.5 hours of travel time each way.
The Kumeshosen ferry offers a more relaxed experience with open deck areas where passengers can enjoy ocean views, and vehicles can be transported on the car deck. The Ocean Jet does not carry vehicles but provides a smoother ride due to its hydrofoil technology, which lifts the hull above the waves. For day trips, the Ocean Jet’s speed advantage is decisive, allowing more time on the island. For longer stays where you need a rental car, the Kumeshosen ferry with vehicle transport may be more practical.
