The SL-7 was a class of high-speed steam containerships built for SeaLand in the early 1970s, operating at speeds in excess of 33 knots. These ships were later converted to the Algol-class Fast Sealift Ships due to high fuel consumption.Quick Read: Check out Rik van Hemmen's article on the subect as published in theJune 2024 edition of Maritime Reporter & Engineering NewsRik van Hemmen