По орудиям Нельсона.

http://www.navweaps.com/Weapons/WNBR_16-45_mk1.htm

3) The average of the full salvo per minute rate for single ship practices between 1928 to 1933 showed a yearly average of 1.90 to 1.53 compared with 2.28 to 1.93 for ships with 15 inch (38 cm) guns.

4) During the first hour of the "Final Battle" against Bismarck, Rodney fired the equivalent of 1.5 salvos per minute. During the entire battle, she fired 1.6 salvos per minute during salvo firing and 1.1 broadsides per minute during broadside firing with outputs of 77% and 62% respectively (salvos were of four and five guns while broadsides were of all nine guns). The following description of the problems encountered by Rodney is taken from "The Final Action: The Sinking of Bismarck, 27 May 1941" by John Roberts: