Yesterday, Grainger, godmother to Avalon Poetry II, won silver alongside double sculls partner Vicky Thornley. It made her the most awarded female Olympian of Great Britain.
Giles Hawke, chief executive Cosmos Tours & Cruises and Avalon Waterways, said:
“We are absolutely thrilled for Katherine Grainger – what an amazing achievement.
“In the office we were watching and cheering her on. It’s great to have a godmother who is actively involved in the Olympics. We’re very excited about it.
“We will be offering Katherine a free cruise to celebrate her medal win.”
Katherine Grainger attended the naming celebrations of Avalon Poetry II in 2014.