"marlin" for Pixel XL 7.1.1 (NOF27B, Mar 2017)
https://developers.google.com/android/images#marlin
https://developers.google.com/android/ota#marlin

"sailfish" for Pixel 7.1.1 (NOF27B, Mar 2017)
https://developers.google.com/android/images#sailfish
https://developers.google.com/android/ota#sailfish

http://source.android.com/security/bulletin/2017-03-01.html