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Old 10 November 2013, 09:12   #11
ynp
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Country: Thailand
Make: Zodiac
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Some more pics.
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Old 11 December 2013, 06:58   #12
ynp
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it is almost finished. Added one house battery.

We have tested the 733 on water, very nice balance with a lot of weight in front.
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Old 11 December 2013, 11:45   #13
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Country: USA
Town: Hood River
Boat name: Seal Team 7
Make: Zodiac SRA-750
Length: 7m +
Engine: Evinrude ETEC G2 300
MMSI: WDI 8895
Join Date: Sep 2012
Posts: 264
Is that 3 start and 1 house battery? Prob 200lbs of batteries?

I'm going with 2x start 24v and 1x 12v house but much smaller 26lbs battery.

After all this work, any idea how much she weighs all up with fuel?

Looks like nice work. Jealous of how clean your bilge is. benefit of having the engines out of the boat.
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Old 11 December 2013, 12:34   #14
ynp
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Country: Thailand
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We have four 12/90 Ah batteries for starting my 2 engines, in parallel and one house AGM battery (not seen above), connected through the VSR. I prefer the smaller units, they are much more manageable. And all the outboard boats I have seen in Thailand have double cranking batteries.
The round hole down is from the marine loo, I am not sure that I want to keep the toilet in the console. But my girls have their own opinion ...

No idea of the weight yet. We tested the boat with the temporary battery arrangement and 25l plastic fuel tanks.
I believe we will have the boat ready by January, the electronics is already there and I will try to get used to the raytheon radar during next season before deciding if I really need a Broadband G4.
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Old 11 December 2013, 23:06   #15
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Country: USA
Town: Hood River
Boat name: Seal Team 7
Make: Zodiac SRA-750
Length: 7m +
Engine: Evinrude ETEC G2 300
MMSI: WDI 8895
Join Date: Sep 2012
Posts: 264
So let me process this. 4x 12v/90ah batteries is 360ah total in a parallel start bank? 1 or 2 or both?, so 2 x 180 ah banks that can be combined for a 360ah bank.

I actually don't know what the big outboards require but that seems fairly massive.

Typo? I'm guessing you have 4x45ah batteries instead.

For example my large single diesel uses a 2 x 12v/45ah batteries for a total of 90ah/12v in my start bank. So that would mean you have four times that.

Reason I'm curious here is that I am redesigning my banks so been researching battery specs quite a bit. I have dual 24v and 12v to deal with which makes things dicey.

Weight does matter.

2 x 45ah batteries is about 75lbs
1 x 23 ah house is 26 lbs

4x90 ah I would calculate at like 300lbs

I have a 24v start bank so I need to add in pairs 12+12.
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Old 12 December 2013, 03:36   #16
ynp
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Quote:
Originally Posted by clloyd View Post
So let me process this. 4x 12v/90ah batteries is 360ah total in a parallel start bank? 1 or 2 or both?, so 2 x 180 ah banks that can be combined for a 360ah bank.

I actually don't know what the big outboards require but that seems fairly massive.

Typo? I'm guessing you have 4x45ah batteries instead.

For example my large single diesel uses a 2 x 12v/45ah batteries for a total of 90ah/12v in my start bank. So that would mean you have four times that.

Reason I'm curious here is that I am redesigning my banks so been researching battery specs quite a bit. I have dual 24v and 12v to deal with which makes things dicey.

Weight does matter.

2 x 45ah batteries is about 75lbs
1 x 23 ah house is 26 lbs

4x90 ah I would calculate at like 300lbs

I have a 24v start bank so I need to add in pairs 12+12.
Sorry for the confusion. English is not my first language and it shows, obviously.

The weight of the boat is of very little concern to me. I understand the penalty of weight and the expansive t-top's windage on the boat's speed and I do not expect my Zodiac to be the fastest. If I wanted to have a light vessel, I'd had better bought a carbon RIB or a catamaran. My boat will be operating in the chop in shallow tidal waters and I hope that the deep V of the hull and weight will help a bit.

Sorry, I was not clear with my wording in my previous post.
We have three bank, two outboard electrical system. The wiring was done per BEP Marine recommendations :
717-140A-DVSR Twin Outboards, Three Battery Banks
We installed two starting (cranking) battery banks, one bank per engine. Every bank consists of two batteries recommended by my shipyard (AGM 12/90 Ah) in parallel.
The Mercury 150 four-stroke Manual recommended one 1000 marine cranking amps (MCA), 800 cold cranking amps (CCA), or 180 ampere hour (Ah) battery per engine. We installed two smaller units for every engine.
I have a 5.5 meter RIB now with one Yamaha two-stroke and we have two batteries for the engine; one engine acts as a house /reserve battery and I wanted to have a separate house battery and the VSR allows us to connect it to any engine for starting.
There is no towing service, the rescue is done by the Navy, and the navy is 30 nm from me, and I think that having a house bank or a battery could be helpful even on a 23' RIB.

Sorry, I cannot comment on the diesel engines because I have very limited experience with them.
--
Gene
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Old 12 December 2013, 10:28   #17
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Country: USA
Town: Hood River
Boat name: Seal Team 7
Make: Zodiac SRA-750
Length: 7m +
Engine: Evinrude ETEC G2 300
MMSI: WDI 8895
Join Date: Sep 2012
Posts: 264
You picked the right boat for a chop. You'll be slicing through it in no time.

Boat looks gorgeous. I'm sure it will get a lot of attention.

We have a similar problem with either no assistance on the river or Coast Guard stationed far down the coast when on the ocean.

Having those 150 outboards is already saving you a lot of weight over a Diesel setup.

Still going to be a fast boat for sure.
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Old 27 December 2013, 09:00   #18
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Country: USA
Town: Stuart, FL
Make: Willard 730
Length: 7m +
Engine: 2 x 175 Suzuki's
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Posts: 785
Looks awesome! Great job!
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Old 31 December 2013, 03:46   #19
ynp
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@ccloyd
@ Ryan
Thank you all for your comments and help.
Happy New Year!
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Old 11 March 2014, 15:31   #20
ynp
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Finished and the boat is overweight, as many had predicted. I will have to strip as much weight aft as possible.
Reached 34 knots with full tanks and new unbroken-in engines.
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