 CONT: When Jack first sails into Port Royal, there is a shot from  behind Jack, looking toward the front of the boat, and there is land  clearly visible across most of the field of vision. After Jack jumps  down, you see him (from a side shot) begin walking toward the back  of the boat. The next shot is again looking towards the boats front  from the stern (which cannot be disputed because Jack is completing  the strides from the previous shot) and there is no land visible at  all.