Public Class powerboat
    Inherits Boat
    Private numberegines As Integer
    Private fueltpye As String
    Public Property mnumberegines() As Integer
        Get
            Return numberegines
        End Get
        Set(ByVal Value As Integer)
            numberegines = Value
        End Set
    End Property
    Public Property mfueltpye() As Integer
        Get
            Return fueltpye
        End Get
        Set(ByVal Value As Integer)
            fueltpye = Value
        End Set
    End Property
End Class