Amphibious assaults may use vessels.Logical formLearned from1 sentences. A series can be constituted-of-or-filled-with amphibious airplanes.Logical formLearned from1 sentences. Amphibious airplanes may be designed by a military-or-other-action-organization.Logical formLearned from1 sentences. Vehicles may be designed for amphibious operation.Logical formLearned from1 sentences. Amphibious operation can be over water.Logical formLearned from1 sentences. Amphibious vehicles may leave on (duck tours).Logical formLearned from1 sentences.