Abstract: A method comprising providing a first fluid, second fluid, and third fluid having a first kinematic viscosity and a first BN, a second kinematic viscosity and a second BN, and a third kinematic viscosity and a third BN respectively, obtaining data identifying (i) a target kinematic viscosity of a cylinder oil to be produced, (ii) a target BN of the cylinder oil to be produced, and (iii) the kinematic viscosity and the BN of each of the first, second, and third fluids. Based on at least the identified kinematic viscosity and BN, the method comprises determining a ratio of first, second, and third fluid to produce a cylinder oil having a kinematic viscosity corresponding to the target kinematic viscosity and/or a BN corresponding to the target BN, and blending the first, second, and third fluids in the determined ratio to produce the cylinder oil.

Abstract: Disclosed is a method for producing one or more cylinder oils of varying kinematic viscosity for a marine reciprocating internal combustion engine. The method comprises providing a first fluid having a first kinematic viscosity and a first BN, providing a second fluid having a second kinematic viscosity and a second BN, the second kinematic viscosity different from the first kinematic viscosity, and blending the first fluid and the second fluid in a first ratio to produce a first cylinder oil having a kinematic viscosity equal to or less than 14 mm2/s at 100° C.

Abstract: Disclosed is a method for determining an effect of varying a propulsor characteristic on vessel propulsor performance, the method comprising: obtaining information indicative of a performance property of a first propulsor of a vessel based on operation of the first propulsor for a first time period with a first variation of the propulsor characteristic; obtaining information indicative of the performance property of a second propulsor of the vessel based on operation of the second propulsor, simultaneous with the first propulsor, for the first time period with a second variation of the propulsor characteristic, wherein the second variation is different from the first variation; and determining a difference between the performance property of the first propulsor and the performance property of the second propulsor. Apparatus for determining an effect of varying a propulsor characteristic, and non-transitory computer-readable storage media, are also disclosed.

Abstract: Disclosed is a method for producing one or more cylinder oils of varying kinematic viscosity for a marine reciprocating internal combustion engine. The method comprises providing a first fluid having a first kinematic viscosity and a first BN, providing a second fluid having a second kinematic viscosity and a second BN, the second kinematic viscosity different from the first kinematic viscosity, and blending the first fluid and the second fluid in a first ratio to produce a first cylinder oil having a kinematic viscosity equal to or less than 14 mm2/s at 100° C.

Abstract: A method comprising providing a first fluid, second fluid, and third fluid having a first kinematic viscosity and a first BN, a second kinematic viscosity and a second BN, and a third kinematic viscosity and a third BN respectively, obtaining data identifying (i) a target kinematic viscosity of a cylinder oil to be produced, (ii) a target BN of the cylinder oil to be produced, and (iii) the kinematic viscosity and the BN of each of the first, second, and third fluids. Based on at least the identified kinematic viscosity and BN, the method comprises determining a ratio of first, second, and third fluid to produce a cylinder oil having a kinematic viscosity corresponding to the target kinematic viscosity and/or a BN corresponding to the target BN, and blending the first, second, and third fluids in the determined ratio to produce the cylinder oil.