I was mate onboard TINNES and TELNES, which was the first Jebsens-belters (as we called them). I joined just a week after the first vessel was delivered from Kleven M/V in Ulsteinvik. Then the captain, chief-officer and chief-engineer had spent many months in Canada, following one of Algoma Railway (I think thats the name) vessels, to obtain experience of to how the system works. Each hold had 8 to 10 gates on the bottom of hold, hydraulic driven, which was controlled from a cargo-control room. Below cargo-holds, where we could watch cargo flow to the belts, we had cameras monitoring the flow, so that we didn't cause spell or overload to motors driving the belts.
These 2 vessels was later transferred to British flag, and has later on done some more flag-changes. I have later been serving on other of the Jebsens-belt carriers, like TERTNES, TORNES and TRIMNES.
I think that you will find photos of these vessels if you search for them on this site.
rgds, Arnes