Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP)
Confusion
Deviation / Discrepancy - Procedural Clearance; Ground Incursion Taxiway
General None Reported / Taken
Chart Or Publication
We arrived in Seattle with no incident. We were originally assigned Cargo 7 line 2W. Due to my unfamiliar with the new Cargo 7 parking lines; I spun the nose of the aircraft in the wrong direction (I had us facing south; while we were supposed to go east). While we were letting Seattle South Ramp Control know of our situation; Operations switched us to Cargo 7 line 4E. That allowed us to move straight ahead and then a left turn into our parking spot. The new Cargo 7 parking lines aren't in the Comply 365 Airport Info Charts yet. While they are in the Jepp charts; the layout can be vague for someone not familiar with the layout. Updating the airport info chart will help with these situations.
Air Carrier Captain reported a ramp incursion due to inadequate ramp chart.