Zero-emission, all-electric commuter seaplane for coastal transportation with 180 mile range. New category of maritime vehicle combining high speed of an aircraft with low operating cost of a boat. In development, flight testing expected in 2025. Includes 100-passenger concept: Monarch seaglider, and variants through REGENT Defense: a hybrid Viceroy Seaglider, an autonomous Viceroy Seaglider, and an autonomous, scaled down Squire Seaglider.