Steel catenary riser system for marine platform

A marine riser system comprising:

• a platform jacket positioned onto the marine bottom of a body of water;
• a tie-in structure mounted on said jacket and lying at a depth below the turbulence zone of said body of water but at a depth which is substantially above said marine bottom, wherein said tie-in structure comprises:
• a frame attached to said jacket at said depth;
• a receptacle on said frame, said receptable comprising:
• a plate having a slot therein;
• at least one flowline on said marine bottom having one end curving upward through a catenary from the marine bottom to said tie-in structure;
• and wherein said one end of said at least one flowline includes:
• a tapered joint forming the terminus of said one end of said at least one flowline;
• a connecting flange on the end of said tapered joint;
• and
• an anchor flange on said tapered joint positioned below said connecting flange;
• and
• means for structurally connecting said one end of said at least one flowline within said slot in said plate of said tie-in structure.