The "Hydroptere" arrived in Honolulu just ahead of solar airplane Solar Impulse's expected arrival today after departing from Japan.
The Swiss-piloted aircraft and French-led boat plan to gather in Hawaii to make a statement on clean energy.
The boat was the first hydrofoil supercraft to make the crossing, but it was not able to achieve high speeds to compete with the four-day 19 hour crossing record due to low wind conditions, the crew said in a statement.
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