"1908, John Mitchell ran aground" she ran aground, subject is unambiguous and prevents a third use of the ship name in as many sentences.
The lead is heavily biased toward the final journey. It should be an even treatment of the article overall. I would reduce the detail in the lead about the final voyage and perhaps increase the detail on the other sections, some of which are barely covered.
"1,350 hp (1,010 kW) or 1,400 hp (1,000 kW)" no need to relink units, they're already linked.
"1908, John Mitchell ran aground" she ran aground, subject is unambiguous and prevents a third use of the ship name in as many sentences.
The lead is heavily biased toward the final journey. It should be an even treatment of the article overall. I would reduce the detail in the lead about the final voyage and perhaps increase the detail on the other sections, some of which are barely covered.
"1,350 hp (1,010 kW) or 1,400 hp (1,000 kW)" no need to relink units, they're already linked.