Whidbey Island’s geography does not allow a seaplane base and a landplane base together. Therefore, the seaplane base is a few miles from the runways at Ault Field (seen here). The Marlin, non-amphibious, can only look at the runways below. Conversely, the Neptune would have much less luck were it to land in the harbor at the seaplane base.
The Jive Bomber 