Eidesvik Offshore has signed a deal to supply Seabed Geosolutions with seismic source and node-handling vessels over a "long-term" period.
The two have agreed a master timecharter agreement, under which individual contracts will be called off, the shipowner said on Monday.
Under the first call-off agreement, Eidesvik's 93-metre seismic source vessel Vantage (built 2002) and node-handling vessel Subsea Viking (built 1999) have received three-month extensions to their respective charters to Seabed.