Its prediction came as its analysts launched coverage of major US players Tidewater, Gulfmark and Hornbeck to expand on the six Oslo-quoted companies already on its radar.

“Much of the OSV market is emerging from a lingering cyclical trough,” wrote analysts Turner Holm and Terje Mauer. “But after four years of weak rates, fortunes improved in 2013.”

They note rates for platform supply vessels (PSVs) were up 15% between the second and fourth quarters of 2013.