1.   Not all the incidents in Iranian waters involved tankers.

2.   Accidents involving fuel tankers are common in this West African country, where roads are poor and many vehicle owners circumvent the required road-worthiness inspections.

3.   It was the second such mishap in four months involving a tanker using the Milford Haven terminal.

4.   It was the second such mishap in four months involving a tanker using the huge Milford Haven terminal, one of the deepest harbours in Europe.

5.   It was the second accident in four months involving a tanker using the Milford Haven terminal.

6.   The accident is the second in four months involving a tanker using the huge Milford Haven terminal, which is one of the deepest harbours in Europe.