Please do not produce a 6h documentary when the presented material fits 1h. For sure there was material enough for a 10h documentary, but the producers chose to not present facts and interesting technical detail. Instead we are presented an endless cycle of repetitive punch lines along "They will not know whether the ship will be seaworthy, but they have to try it ... just like the Vikings did." Great lines for a 10m introduction, but not so much when on repeat for 6h!