As she wasn't welded together afloat it is not the tanker "Rondefjell" but she must have been one of the first built in two pieces. She was ordered by Olsen & Ugelstad from John Crown whose slipways weren't long enough to build her in one unit and the two halves were launched seperately and joined together in Middle Docks dry-dock, and "Rondefjell" was known as 'The half-Crown ship'.
The only other Tankers I recall being built their in 70,s at Linthgows were a pair for Korean owners King Star and Gold Star the latter becoming the Nicos J Vardinoyannis for some London Greek Outfit and the Jag Priya for Great Eastern Shipping. Apart from that there was British Spey- now Im stumped
Launched as NAESS SCOTSMAN and name changed to NORDIC CLANSMAN while building. As you say the stern section went in as NAESS and the bow as NORDIC!
Pics in the Tankers Forum.
Sadly only 4 were ever built. The whole area is now razed and forms a new alignment to the main A8 road.
WORLD SCORE and WORLD SCHOLAR originally intended for the ill fated Maritime Fruit Co. who ordered masses of ships in the 1970s and then collapsed leaving yards with uncompleted ships.
The two tankers ordered from Lithgow/s were taken over by the Niarchos Group. I/ve put a pic I took of WORLD SCORE in the Gallery.