As wave and tidal energy generators advance towards full-scale deployment and commercialization, addressing challenges in the marine environment regarding the lubrication of the components integrating the Power- Take-Off (PTO) system become crucial. Environmental acceptable lubricants that can be biodegraded such as watersoluble polymers are being considered as an alternative to control friction and wear in ocean energy generators. However, compared to synthetic lubricants or mineral oil, they have shown limitations in preventing corrosion, wear, and excessive friction, which can result in premature failure of moving parts. This study explores the potential of different water-soluble polymers as environmentallyfriendly lubricants that meet stringent regulations and provide effective protection against wear and corrosion in offshore conditions. The analysis focuses on the polymers ability to form an elastohydrodynamic film, mitigate surface degradation, prevent corrosion, as well as their rheological properties at different concentrations. The findings reveal that large polymers such as PAG when added in low concentrations in the water can form a separating film under high contact pressure in the low-speed region, while viscosity has shown to have less impact on the ability of the polymer to form a full film. Increasing polymer concentration in the aqueous solution negatively affects the corrosion resistance of steel components at the expense of improving the film-build up. These results offer valuable insights for designing lubrication solutions to protect offshore energy devices.