Hi Martin, I run my restart test on lab_sea experiment with useHB87stressCoupling (the lab_sea hb87 set-up) on my laptop with g77 (-ieee), and it does not work very well. The ice velocities are different by as much as 1.% (in the seaice monitor, seaice_uice_mean). Did you check before that the restart was OK ? Thanks, Jean-Michel