Freshwater Cooling vs Raw Water Cooling?

[sierracierra]

Doing a little research here. I used to own a gas inboard and freshwater cooling is considered important to those of us that exclusively use our boats in the ocean.

It seems clear that the older diesel engines available in the Ranger Tug 25 models, Yanmar and Cummins did not have freshwater cooling (Am I wrong?). Not sure if adding freshwater cooling is/was an option?

As for the Volvo D3-150 . A friend has a D3-150 in his boat (with a Volvo outdrive) and he definitely has freshwater cooling. Is freshwater cooling standard or an option on Ranger Tugs with the Volvo diesel?

Is it out of line to ask why the switch from Yanmar to Volvo? I don't know enough to know which, if ever given a choice, to prefer, both are very reputable manufacturers IMHO.

Any information would be appreciated.

Safe Boating!

 

[NorthernFocus]

Doing a little research here. I used to own a gas inboard and freshwater cooling is considered important to those of us that exclusively use our boats in the ocean.

It seems clear that the older diesel engines available in the Ranger Tug 25 models, Yanmar and Cummins did not have freshwater cooling (Am I wrong?). Not sure if adding freshwater cooling is/was an option?

As for the Volvo D3-150 . A friend has a D3-150 in his boat (with a Volvo outdrive) and he definitely has freshwater cooling. Is freshwater cooling standard or an option on Ranger Tugs with the Volvo diesel?

Is it out of line to ask why the switch from Yanmar to Volvo? I don't know enough to know which, if ever given a choice, to prefer, both are very reputable manufacturers IMHO.

Any information would be appreciated.

Safe Boating!

Presumably by "fresh water cooling" you are referring to a closed loop coolant(typically antifreeze) in the engine which is cooled via heat exchanger with "raw water" drawn from outside the boat. If that is what you mean, then all of the boats are configured that way. I own an R25 classic with Cummins engine and it is certainly configured with a closed loop system.

 

[knotflying]

All Ranger products are closed cooling system with raw water heat exchanger.

 

[sierracierra]

Closed Cooling was exactly what I meant.

Great to hear they all come that way!

Thanks for the info.

Safe Boating!