USCG Exam PracticeRule 3 — General Definitions
A Wing-In-Ground (WIG) craft is defined under the Inland Navigation Rules as:
- A. Any high-speed vessel that achieves lift through hydrodynamic forces on the hull
- ✓ A multimodal craft which, in its main operational mode, flies in close proximity to the surface by utilizing surface-effect actionCorrect
- C. Any non-displacement craft capable of exceeding 30 knots over the water surface
- D. A seaplane operating in displacement mode prior to takeoff
Why B is correct
33 CFR §83.03(m) provides the precise regulatory definition: a WIG craft is a multimodal craft which, in its main operational mode, flies in close proximity to the surface by utilizing surface-effect action. The definition is not based on speed, hull lift, or seaplane operations.
Cited:33 CFR §83.03(m)