public void SuccessfulIsNotUnderwayTest()
        {
            var underway = new ShipTest {
                NavigationalStatus = NavigationalStatus.Other
            };

            Assert.IsFalse(
                underway.IsUnderway()
                );
        }
        public void SuccessfulIsUnderwayTest()
        {
            var underway = new ShipTest {
                NavigationalStatus = NavigationalStatus.Underway
            };

            Assert.IsTrue(
                underway.IsUnderway()
                );
        }