As I understand the site, the "first" picture (number 17) was taken in 2004 but was added (posted) on July 10. 2006.
But the second one (number 19) the BERGSKALD - IMO 9131187, still taken in 2004 was added in 2008.
And, the third, number 20, the HELENE MAERSK - IMO 9034705 was added in 2006.
So, if you were looking for the first posted or added, I think some researches will have to be done unless you were looking for the first captured ship, which is the LAKE LISI - IMO 8207044.