Anyway, my question is this: is it possible to get yourself rolled up and trapped inside a hammock? If so, how could this feasibly happen? (There are other people around, so it doesn't have to be the trapped person's fault.)
(For reference, this takes place on an 18th-century ship, but I assume hammock designs haven't changed much in 300-odd years.)
EDIT: It doesn't seem to be possible. Ah well, I thought it was worth making sure.