The later development is even more of ... issues: https://www.popularmechanics.com/military/navy-ships/a22473758/spains-newest-submarine-is-too-big-for-port/ h

The later development is even more of ... issues: https://www.popularmechanics.com/military/navy-ships/a22473758/spains-newest-submarine-is-too-big-for-port/ https://www.popularmechanics.com/military/navy-ships/a224737... "Spain’s Newest Submarine is Too Big For Port" (July 2018) "In 2013, ten years after the first boat was ordered, authorities detected a critical flaw in the design: The submarines were 75 to 100 tons heavier than anticipated. The submarines could dive but there was some question as to whether they could reliably surface again." "The shipbuilder, Navantia, immediately suspended construction of the subs and called in U.S. submarine builder Electric Boat to solve the buoyancy issue. EB recommended the shipyards lengthen the S-80s by thirty feet, stretching it from 232 feet to 265 feet..." "Now, fifteen years after the submarines were ordered there is a new problem: The first submarine, Isaac Peral, is too large to fit in its port at Cartagena. Authorities say the port will have to be enlarged and dredged to fit the updated design. It’s odd that Spanish authorities are suddenly discovering the problem considering the submarines were actually built in Cartagena and everyone involved has had five years to ponder the ramifications of enlarging the sub’s design."