Fig. 1.

This model schematic represents the structural features of the dynamic contact networks within the ship after the lockdown event was imposed. The larger ship is divided into decks, and on each deck, there are multiple sectors, and within sectors passenger cabins and crew quarters. Networks are comprised of passenger-passenger, passenger-crew, and crew-crew contacts. After lockdown, all passenger-passenger contacts are limited to cabinmates, and crew contacts are substantially reduced to mostly within sector contacts.