Phasma2128
Well-known member
- Joined
- Jan 9, 2021
- Messages
- 257
- Status
- OWNER - I own a Hatteras Yacht
- Hatteras Model
- 48' COCKPIT MY-Series II (1993 - 1996)
Over the years I owned several boats. Boston Whaler, Fisher, Nitro, Regal, and 2 Sea Rays 24 and 36 respectively. Now freshly retired my obviously limited mental capacity has had me make the decision that I must have a “retirement” boat. Having the same dreams as many of you have, I decided on a Hatteras. Wow! What a boat. Built like tanks and capable of long cruises into the horizon. After all…..what could go wrong?
So many years with gassers has me under the delusion I can handle this new project. I found a 1994 Hatteras 48 cockpit motor yacht. 2600 hours on Detroit Diesels 6v92TA. Once again, I am far from a beginner boater yet I find myself stressed over this Friday’s closing on this boat. I’ve begun to realize how much I don’t know about Hatteras or Diesel engines. While I do understand how a diesel functions and I do understand the concepts of fuel filters. I don’t know simple things like fuel tanks. This 48 footer supposedly has a 200 gallon keel tank as well as a 460 gallon main tank. There are two fill ports one starboard and one port. Which one goes what tank? Is there a cross over pipe between the tanks like on a semi-truck? Is there a transfer pump to access one tank over the other? Do I need to manually switch them at some point? Which tank should I primarily draw from? Do I need to prime the system before starting? I know enough about diesels to know air is the enemy in fuel supply system.
I also am interested in what this is and the correct way of using it?

fuel shut offs? Transfer valves? I understand that diesels have a fuel return line from the injectors. Just not sure about if I draw from one tank as the supply and return to the other? Or should supply and return be to the same tank? My limited imagination tells me the keel tank should be last to be used as that is a lot of keel weight. Is that true?
Isn’t it funny how some decisions in life humble you? They make you realize how much you don’t know about anything….
Thanks in advance for any help
So many years with gassers has me under the delusion I can handle this new project. I found a 1994 Hatteras 48 cockpit motor yacht. 2600 hours on Detroit Diesels 6v92TA. Once again, I am far from a beginner boater yet I find myself stressed over this Friday’s closing on this boat. I’ve begun to realize how much I don’t know about Hatteras or Diesel engines. While I do understand how a diesel functions and I do understand the concepts of fuel filters. I don’t know simple things like fuel tanks. This 48 footer supposedly has a 200 gallon keel tank as well as a 460 gallon main tank. There are two fill ports one starboard and one port. Which one goes what tank? Is there a cross over pipe between the tanks like on a semi-truck? Is there a transfer pump to access one tank over the other? Do I need to manually switch them at some point? Which tank should I primarily draw from? Do I need to prime the system before starting? I know enough about diesels to know air is the enemy in fuel supply system.
I also am interested in what this is and the correct way of using it?

fuel shut offs? Transfer valves? I understand that diesels have a fuel return line from the injectors. Just not sure about if I draw from one tank as the supply and return to the other? Or should supply and return be to the same tank? My limited imagination tells me the keel tank should be last to be used as that is a lot of keel weight. Is that true?
Isn’t it funny how some decisions in life humble you? They make you realize how much you don’t know about anything….
Thanks in advance for any help
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