Atthe start of the battle with the British fleet, Calpyso (on board thePearl) was freed from her "human bonds" by Barbossa (who had collected all the pirate lords"" pieces of eight and then performed a ritual) - grew to gigantic size, and unleashed a violent whirlpool, rain and windstorm.The uniformed, bossy commander of the ship, Admiral Robertson (Warren Muson), had aspirations not shared by his teenaged, graduating son Sean Robertson (Scott Reeves), about his captaining of the ship." Will""s dad grew discouraged without Caesar to keep him company.Will planned to develop a "more aggressive virus strain" with a "faster delivery method" to combat his father""s progressing dementia.Both teams decided to trek across the island to an old communications center to radio for help after all the equipment was damaged or lost.