SailNet Community - Reply to Topic
Thread: Mooring and Battery Power Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
04-04-2002 06:52 PM
Mooring and Battery Power

Thanks for the info on the turbine Dennis! I''m going to look into the jib or backstay option. That might be plausible - if if the price is right.

Unfortunately, I don''t have the space to mount an inboard generator (and besides - I think they are way to pricey!). If I went that route, the only space I could possibly put the generator is fairly far from the fuel tank (I''d want a diesel powered generator and would want to supply fuel from the fuel tank - don''t like the idea of running such a long fuel line).

Whichever route I go - it is a significant investment and I want to be sure I make the best choice before sinking in the money!

Thanks for all your help!

04-04-2002 02:26 PM
Mooring and Battery Power

Hi Ms,
Yes, you can mount one from the spin. or jib halyard by using guy lines. I''m not sure exactly how it''s done, but I know it is done. I'' ve seen that in brochures and I do believe Tom Neale (a contributing writer for Cruising World mag.) had that set-up on his Gulfstar 47. On that issue I would get in touch with Ferris power producs, Ashland, Ma., 1508.8814602 or Jack Rabbit Marine, Stamford, Ct. 12039618133. You could even try , I''ve met him, he''s a cool breeze and I'' m sure he''d help.

Mounting an top of a mast is a good option simply because there''s more wind up there and you won''t hear the blade noise as they turn. However, you will get a hum through the mast, but it''s not bad. A friend of mine that passes through here every two years on his trip from Montreal to Martinique has an Air Marine atop his mast on his Sun Legend 41, and loves it! He''ll anchor by my mooring and his turbine will be putting out one third more than mine. Mine is on a transom mast. I spend alot of time on my boat and every time I get there, the batts. are full.
Granted, mast top and halyard mount are not the norm, but they are used.
Back to the generator. If you go the generator route just remember this... you don''t want the batts (or any device) to try to "pull" more amps out of the generator than it can supply. If the batts. want a thirteen amp charge and the generator can only put out eight, eventually you will dammage your generator and the batts. won''t get what they need- your deep cycle batts. won''t be being treated properly. I must speak freely but respecfully: I don''t like the generator idea. I have a Honda ex 350 and a Nisson 1,000.I don''t use either for charging purposes. Before I got my turbine, I used my 350 to run lights and the like. (small amps). I used the 1,000 for running tools. (I bought 12 V cordless tools and run them off the ships batts. I don''t even use the 1,000 any more). I have a Balmar high amp alternator and external regulator...I hardly ever use that. Are you located in an area that has a decent turn-out of wind?(so to speak). If you have at least one day per week when the wind blows 15 to 20 knots (or the equivelent) you''ll be fine with a turbine.( hey... that rymes)
When I see my turbine charging my batts. and powering lights etc., it makes me feel good! And after the initial cost,IT''S FREE!!! Otherwise motor sail home at the end of the weekend to charge. But thats not a bad thing.


One more thing, you could install a permanent inboard generator. With a center cockpit boat, you probably have the room. If you have the money.

04-03-2002 06:23 PM
Mooring and Battery Power

Hi Dennis -

Yes - I''d like to hear more about the turbine. They make turbines that mount in the rigging? That''s interesting. As I mentioned before, my transom is fairly cluttered due to the dinghy. No room to mount on a mast or masthead (I have a center cockpit S-2, cutter rigged). I''ve never seen a masthead mounted turbine, and that is not suggested as an option in any of the literature I''ve read.

Regarding the generator - you mentioned that you hooked the recharging recepticals directly to the battery. I''m wondering, if I went the generator route and plugged into the AC receptical, if the charging would take longer as the three pronged AC plugs are 15 amp plugs - vs the straight 30 amps you get when hooked to shore power?

Another benefit of charging via the AC receptical is it the generator would also power my hot water heater - which heats only via my boat''s AC system or via heat exchanger on the engine. Also, the Honda generators are very very quiet.

I saw Pete''s note on sine wave/non sine wave electrical currents. From what I have read, the small Honda''s are sine wave (and therefore produce the "cleaner" currents).

Although I mention the generator a lot, somehow I feel that it is "cheating" - if you know what I mean. Using the turbine has more of a feel of "living off the land" so to speak.

Still - is it just me? I keep thinking about the many cruising sailboats I have seen - many are kept on moorings and (from my recollection - which may be flawed) - few have solar pannels or turbines. So the must be either using their engines or using a generator to power up?

04-03-2002 07:35 AM
Mooring and Battery Power

Hi Ole Pete,
Yes that explains it quite well. I thought it might be something to do with sine waves ''cause I know some inverters hum. Thank you.
You wanna comment on charging deep cycle batts. with a portable generator by any chance?

04-03-2002 05:31 AM
Mooring and Battery Power

Hi Pangea
Simple explination. Not sure how to spell it. sign wave. diferent types of generators produce electricity in different ways. Some are dirty. could also be sympathetic harmonics caused by the particular cps frequency that your generator was running at. Bottom line no smoke no problem.
Ole Pete
04-03-2002 03:45 AM
Mooring and Battery Power

Good Morning MSam,
Here,s whats up with hooking a turbine up. You'' ve have the mast that the unit sits ontop of, (usually on the transom but also on top of the main or mizzen mast, on the front of themizzen mast or from the rigging) two supports that sit 90 degrees of each other, and three wires, red black and green, exiting through the bottom of the yaw bearing. Thats it! And the installation is really pretty simple, and once you put it up... thats it, period. (at least with the Air Marine).
Now... the problem I had with plugging the ac output from the gen. into the ships ac recepticle is that it made my charger make a strange hum; I didn''t trust that so I hung it on the stearn rail, made- up wires and ran the D.C. output to the batterys. May I suggest that if you choose to do this mount a weather proof plug on the transom and hard wire the D.C. charging wires to the batts. cause they will get in your way and their a pain to set-up and put away.
Solar pannels are very expensive for their performance. I don''t think their worth it unless you are doing some serious crusing and have a large battery bank and even then their only suplemental. They only give their rated power if the sun is shining directly perpendicularly on them and only if the sky is clear and only if it''s day time. If the conditions are perfect, you will only get about six to ten amps amps and thats after paying 800 to1,300 dollars. Their are smaller ones.
My Air Marine starts-up at six Kts. of wind with 1/4 amp of output, 2.5 amps at 10 Kts., 7.5 at 15 kts., 20 amps at 20 Kts. and up to 40 amps. If you want, I''ll get into it further in the next post, there''s much more!
Yes, people run their engines alot and it''s not good to run a diesel at a small load. Besides do you really want to use an expensive engine, worth thousands of dollars, to charge a couple hundred dollars worth of batts?
Well, I gotta go. Talk with you latter.


P. S. Can anybody shed some light on as to why my charger made that hum when ran by the generator?

04-02-2002 03:29 PM
Mooring and Battery Power

Hi Dennis -

Regarding the turbines - maybe it''s just my lack of familiarity with rigging one up - also think they''re unsightly. Also, I have a hard dingy on davits hanging off my transom and I think mounting a turbine would in that area would be crowded - but maybe you''re right that I should re-explore the option.

Regarding the generator - I figured there are several advantages. The Hondas are super quiet. Also, by plugging the generator into the boat (harnessing the generator''s power from the 15 amp AC recepticle into the 30 amp shorepower socket)I would be able to charge the batteries through the charge regulator (?) and (I think) would get a full 3 stage charge. In addition - the generator would power my AC outlets throughout the boat (I don''t have an inverter).

I haven''t really looked closely at boats on moorings (there are no moorings where I used to keep my boat) - but I would think only a few have solar pannels or turbines - so I''m wondering how everyone who doesn''t have these items gets keeps power up. Maybe just running the engine....
04-02-2002 02:39 PM
Mooring and Battery Power

Hello MSam,
Yes, the generater will work but remember, they won,t be getting a true deep cycle, three stage charge. But I'' ve used them in the past and they will work.
I still have a Honda EX-350 that I used to use. I would hang it from my stearn rail with the exaust pointing aft to keep deadly gasses from entering the cabin and to keep the little oil "spits" from staining my cockpit, I would even go to shore sometimes and let it charge away. Um... may I say though... I personaly think that a turbine would be your best bet.
Can I ask why your so against them?

04-02-2002 11:45 AM
Mooring and Battery Power

Thanks for your reply.

I was actually thinking of getting a Honda 700 Watt generator. You really think it is sufficient to charge 2 banks of 2 x 6 V house batteries (starter battery is separate)?

I expect to be on the boat during the weekends and using the batteries - so, an appropriate generator might help since I hope to sail and not run the engine (also, using the diesel a lot in a low load state is not great for the engine).

04-01-2002 07:46 PM
Mooring and Battery Power

I cruised and anchored all over San Diego last spring for 2 months. I fortunatly have a power boat. I have a monster genny. 6.5kwh. It used alot of gas to do little. you can keep a fridge, freezer and charger going quit well on a small 700 watt Honda. I suggest that you use an independant battery to start your engine at all times. Unless you can rope start it in a pinch. Even cheep Wal-mart car batteries will hold suffiecient charge for over a month to start an engine.
Ole Pete
This thread has more than 10 replies. Click here to review the whole thread.

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

For the best viewing experience please update your browser to Google Chrome