How did Vikings sleep on ships?

How did Vikings sleep on ships? There is enough space for people to squeeze past each other, and on longer voyages the off-duty crew will often sit back or sleep between the ‘benches’ while on-duty crew use the benches as they handle the sails and trim the boat.

There is enough space for people to squeeze past each other, and on longer voyages the off-duty crew will often sit back or sleep between the ‘benches’ while on-duty crew use the benches as they handle the sails and trim the boat.