1. [1] ISO 15380, 2011: Lubricants, industrial oils and related products (class L) - Family H (Hydraulic systems) - Specifications for categories HETG, HEPG, HEES and HEPR.
2. [2] Wholly, C. J., “Development of an Environmentally Adapted Sterntube Lubricant,” Proceeding of the 7 International Symposium on Marine Engineering, Session 31-1, 2005, 1-8.
3. [3] Sada, H., “Biodegradable Lubricants and Seals for Stern Tubes,” Journal of Japanese Society of Tribologists, 56, 2, 2010, 93-98 (in Japanese).
4. [4] VGP, 2013: Vessel General Permit for Discharges Incidental to the Normal Operation of Vessel (VGP).
5. [5] Gold, P. W., Schmidt, A., Dicke, H., Loos, J. and Assmann, C., “Viscosity-Pressure-Temperature Behaviour of Mineral and Synthetic Oils,” J. Synthetic Lubrication, 18, 1, 2001, 51-79.