In 1976, Carson Helicopters of Perkasie PN got a contract to off-load ships in the harbor at Djeddah, Saudi Arabia. We used Sikorsky S-58Ts.
I was one of the pilots on this caper. We used 115' long-lines to haul 4400 pound loads of bags of cement from ships to shore so that they could quickly upgrade their infrastructure. It was hard and challenging flying. In the picture above, the cover of an Aramco company magazine, you can see the load, just at the water line, leaving behind a long trail of dust.
The ships were a mile off shore in the bay, and we got to the point we could make a round trip every three minutes for hours on end.
I will publish more pictures soon.