I read a little about the boats and found that they're reasonably new vessels, launched only this year and now being deployed to their new home near Côte d'Ivoire. Apparently, these two are Diesel-Electric-powered boats, which I understand makes them a little special in that they're not quite as bad for the environment as many other ships - they reduce CO2 emission by 30% and are lighter on diesel than traditional diesel-powered vessels.
Enough about Tidewater and the boats for now, and back to the helicopter trip. If you have the opportunity you absolutely HAVE TO take an early-morning flip in a chopper around Cape Town. I now understand why this city is often considered the most beautiful in the world. But, don't take my word for it - visit again tomorrow, because I'll be posting a few more early-morning aerial photos of Cape Town. Early morning is a beautiful time to see the city and its mountains.
Take a look at this article to read more about the two vessels.