This oaoer was resented at the 19th Annual OTC in Houston. Texas. Aoril27-30. 1987. The material is subject to correction by the author. Permission to copy is restricted to an abstract of not more than 300 words. ABSTRACTI n mid 1987 a 250 000 DWT converted t a n k e r w i l l be connected, through a r i g i d moorimg yoke, t o an a r t i c u l a t e d column which was i n s t a l l e d d u r i n g October 1986 i n t h e VEGA f i e l d o f f s h o r e from S i c i l y . T h i s ARC-YOKE Mooring System i s equipped t o handle an estimated p r o d u c t i o n o f 60 000 b a r r e l s per day w i t h a system a l l o w i n g a d d i t i o n o f d i l u e n t t o t h e crude c i r c u l a t i o n i n o r d e r t o a v o i d clogging. The Paper g i v e s a complete d e s c r i p t i o n o f t h e system and some d e t a i l s o f t h e f a b r i c a t i o n o f t h e most noteworthy components, such as t h e l a r g e -s i z e u n i v e r s a l and t r i -a x i a l j o i n t s . A l a r g e p a r t o f t h e paper i s a l s o devoted t o column i n s t a l l a t i o n , which r e s o r t e d t o o r i g procedures i n order n o t t o r e q u i r e t h e need underwater assistance. t h e i n a l f o r