Nice picture! Pontos and Aegean Pearl were both built in Japan (Minami-Nippon Shipbuilding Co. Ltd, Oita) in 1978 for Chandris company and were planned to be named "Pacific Prosperity" and "Atlantic Progress" respectively. Both vessels were long term time chartered and bare-boat chartered many times, thus the long list of ex-names:

Pontos:
TFL Prosperity, 1978 to 1981
Merzario Lombardia, 1981 to 1982
TFL Prosperity, 1982 to 1983
Union Sydney, 1983 to 1986
Freeway North, 1986 to 1988
Pacific Prosperity, 1988 to 1997

Sold by Chandris, renamed Azzahra, 1997 to 2007

Sold to Salamis, renamed Pontos, After 17 May 2007

Aegean Pearl:
TFL Progress, 1978 to 1981
Merzario Emilia, 1981 to 1982
TFL Progress, 1982 to 1983
Union Dunedin, 1983 to 1987
Atlantic Progress, 1987 to 1988
Stena Progress, 1988 to 1989

Sold by Chandris, renamed C.R.Tanger, 1989 to 2001

Sold to Aegean Cargo, renamed Aegean Pearl in 2001

You may find photos of these two vessels in Shipspotting under the above names - truth is they look much pretier in their original black / dark blue hull colors.

I personally sailed on the Pacific Prosperity as a cadet, and I am happy to see her as the Pontos frequently in Drapetsona port on my way to work.

Thanks for posting!

Ioannis