means—
| (a) | a ship plying between a port in one country and a port in another country; or |
| (b) | [Paragraph (b) deleted by section 3(g) of Act No. 30 of 1959] |
| (c) | [Paragraph (c) deleted by section 3(g) of Act No. 30 of 959] |
| (d) | a whaling boat other than a shore-based whaling boat; |