It's a ship that brings containers from Canada to Liverpool - it's quite a sizeable ship - it's about 210m long and it's about to swing to go through a passage way in order to gain access to the lock.
These bugs allowed anyone who had access to your iPhone to bypass the lock screen and gain access to your stored photographs and contacts, and even make calls.
Sites that use CAPTCHAs typically tolerate a certain failure rate for humans, but may lock out access from an IP if the failed attempts exceed a threshold.