In addition HMS Nelson (Nelson class main armament: nine 16-inch guns) was held in reserve until June 10.
Heavy cruisers
Five heavy cruisers (main guns of 8 inches) took part, three from the United States and two from Britain, HMS Hawkins had her original armament of seven 7.5-inch guns while HMS Frobisher's main gun armament had been reduced from seven to five single-mounted 7.5-inch guns.
17 British light cruisers took part along with two of the Free French navy, and one of the Polish navy. All carried either 6- or 5.25-inch guns of varying numbers.
HNLMS Sumatra (Dutch, decommissioned due to crew shortages and losing her guns to HNLMS Flores and Soemba, used as blockship in "Gooseberry" breakwater)
The British 9th and 159th minesweeping flotillas and U.S. 7th Minesweeping Squadron provided minesweeping protection.
A distant anti-submarine screen to the operation was provided by HMS Onslow, Offa, Onslaught, Oribi, Melbreak and Brissenden. Additional protection from E-boats was provided by Motor Gun Boat flotillas.
^Investigations indicate that the Svenner may have been hit by an early version of a German anti-shipping missile (possibly a Fritz X), instead of the more usual attribution of a torpedo from the German large torpedo boast Jaguar or Mowe or T28 based at Le Havre. There have also been reports of German bombers releasing long, torpedo-like bombs, but from a very long distance, no way near firing-range. The most likely, though, is that it was hit by a torpedo, but accounts point in either direction.
^Ryszard Leszczyński: Ginące frachtowce. T. 1. Gdańsk: Fundacja Promocji Przemysłu Okrętowego i Gospodarki Morskiej, 2007, p. 48–54. ISBN 978-83-60584-08-8