the crew have no shelter from the weather, no cleaning facilities and no lavatories.
No lavatories. With women aboard - I rather doubt this was the case with the original Vikings, they didn’t have unisex liberalism back then - I suspect there is more to see than just the scenery.
The Vikings had women on board all the time, but usually on the return voyage as part of the booty.
“they didn’t have unisex liberalism back then”
- Those were the days!