Miscalculations at the engineering stage have been blamed for a two-year delay in delivery of the first of four submarines commissioned from Spain's state-owned shipbuilder Navantia.
Last month it emerged that the Isaac Peral sub – part of the new S-80 series and named in honour of the Spanish man credited by some as the inventor of the underwater vessel – was at least 75 tons overweight, an excess that could compromise its ability to surface after submerging.
h/t BK
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