1 Subjects: “...Froude propulsion efficiency...”

2 Subjects: “...energy efficiency modelling...”

3 Subjects: “...computational efficiency...”

4 Subjects: “...technical and super-efficiencies...”

5 Subjects: “...energy efficiency...”

6 Subjects: “...energy efficiency...”

7 Subjects: “...high efficiency...”

8 Subjects: “...high efficiency...”

9 Subjects: “...high efficiency...”

10 Subjects: “...efficiency...”

11 Subjects: “...efficiency...”