Bladder Tanks
My plan is to use bladder tanks on deck and in the lazeret for fuel on the long runs. But before I actually commit I would like to ask the list and see if there is any experience with them.
Addition of 250 to 300 gal as I only carry 450 with 50 additional in day tank. 2 Gal hour burn at 1650 rpm, 6.5 knots. no gen etc.
Thanks in advance for any thoughts that might be shared.
Willy
Invader No 1
39 Kishi Conversion
Willy,
Check back with us in about 6 weeks! We're leaving the West
Coast soon for Hawaii with a 500-gallon bladder tank in the
Cockpit to supplement the 2700-gallons in four main tanks.
(620-gal each for "day" tanks in the Engine room, plus 1200
Gallons in the keel/belly and 350 in the lazarrette)
At appropriate RPM, our range should have us arriving in
Hawaii with about 750 to 1000 gallons in reserve. Unless,
Of course, we take a longer route to avoid weather... :)
-----Original Message-----
From: passagemaking-under-power-bounces@lists.samurai.com
[mailto:passagemaking-under-power-bounces@lists.samurai.com]
On Behalf Of CFE Inc.
Sent: Tuesday, May 17, 2005 1:06 PM
To: passagemaking-under-power@lists.samurai.com
Subject: [PUP] Bladder Tanks
My plan is to use bladder tanks on deck and in the
lazeret for fuel on the long runs. But before I actually
commit I would like to ask the list and see if there is any
experience with them.
Addition of 250 to 300 gal as I only carry 450 with 50
additional in day tank. 2 Gal hour burn at 1650 rpm, 6.5
knots. no gen etc.
Thanks in advance for any thoughts that might be shared.
Willy
Invader No 1
39 Kishi Conversion
Passagemaking-Under-Power Mailing List
Whew! I'm curious -- with such large bladder tanks do you fellas have
them baffled in any way? Are they set into some type of "catch-all" in
case they develop a leak or become punctured? I have no first-hand info
that those measures should be addressed.....just a sense that that's a
lot of potential "runny cargo" in a stiff seaway.
Anybody else have experience with that size fuel bladder, sitting in a
cockpit?
Rod Gibbons
Paul Goyette wrote:
Willy,
Check back with us in about 6 weeks! We're leaving the West
Coast soon for Hawaii with a 500-gallon bladder tank in the
Cockpit to supplement the 2700-gallons in four main tanks.
(620-gal each for "day" tanks in the Engine room, plus 1200
Gallons in the keel/belly and 350 in the lazarrette)
At appropriate RPM, our range should have us arriving in
Hawaii with about 750 to 1000 gallons in reserve. Unless,
Of course, we take a longer route to avoid weather... :)
-----Original Message-----
From: passagemaking-under-power-bounces@lists.samurai.com
[mailto:passagemaking-under-power-bounces@lists.samurai.com]
On Behalf Of CFE Inc.
Sent: Tuesday, May 17, 2005 1:06 PM
To: passagemaking-under-power@lists.samurai.com
Subject: [PUP] Bladder Tanks
My plan is to use bladder tanks on deck and in the
lazeret for fuel on the long runs. But before I actually
commit I would like to ask the list and see if there is any
experience with them.
Addition of 250 to 300 gal as I only carry 450 with 50
additional in day tank. 2 Gal hour burn at 1650 rpm, 6.5
knots. no gen etc.
Thanks in advance for any thoughts that might be shared.
Willy
Invader No 1
39 Kishi Conversion
Passagemaking-Under-Power Mailing List
Passagemaking-Under-Power Mailing List
At 04:46 PM 5/17/05 -0700, you wrote:
Anybody else have experience with that size fuel bladder, sitting in a
cockpit?
I have single use experience with a 400 gal bladder tank set on the forward
deck of a sailboat. It scared the daylights out of us, just looking at it;
with the fuel surging back and forth. At night we would turn on the floods
just so we could see if it was still there. That was even more scary. We
had a hand made net of 3/8 inch polyprop holding it down. It was about 4
feet wide and 12 feet long. We siphoned the fuel off after about 10 days of
running. After that everybody slept better at night, daytime too.
We had no trouble with leaks, but expected it to burst at any moment. We
tied a rope around the plate opening, tied that up in the air to keep the
fuel from sloshing out, stuck a plastic tube inside and started the siphon.
The fuel transfer went without a hitch and was done in calm weather. There
were definite abrasion marks that would have lead to eventual failure, this
in only 2 weeks or so of usage.
I have never used a bladder tank since. I am not sure I could be talked
into it again, certainly not that size.
Mike
Capt. Mike Maurice
Tualatin(Portland), Oregon
It is my recollection that the Nordhavn 40 that went around the world or one
that went to Hawaii had a bladder tank located in its Portuguese bridge and
there was some talk on T&T about the vessel's CG etc. As I recall, the tank
(about 200 gal.?) worked out well and they drew from it first. Bob, do you
recall commenting on this arrangement a year or two ago?
Ron Rogers
----- Original Message -----
From: "CFE Inc." cfeinc@telus.net
| My plan is to use bladder tanks on deck and in the lazeret for fuel on
the long runs. But before I actually commit I would like to ask the list and
see if there is any experience with them.
|
| Addition of 250 to 300 gal as I only carry 450 with 50 additional in day
tank. 2 Gal hour burn at 1650 rpm, 6.5 knots. no gen etc.
|
| Thanks in advance for any thoughts that might be shared.
Hi Ron,
The Nordhavn 40 "Nordhavn" which went around the world in 2001/2002 did so
using her stock fuel tanks.
The 40 has two fiberglass fuel tanks for a total of approximately 920
gallons.
The run to Hawaii (2,300 miles) was the longest leg of the trip (Georgs was
aboard- you can ask him), but no additional fuel tanks were installed or
used on any of the legs.
One of the purposes of the trip was to demonstrate that this trip could be
done on an unmodified hull.
Jeff Merrill - Nordhavn Sales
-----Original Message-----
From: passagemaking-under-power-bounces@lists.samurai.com
[mailto:passagemaking-under-power-bounces@lists.samurai.com]On Behalf Of
Ron Rogers
Sent: Tuesday, May 17, 2005 9:28 PM
To: Passagemaking Under Power List
Subject: Re: [PUP] Bladder Tanks
It is my recollection that the Nordhavn 40 that went around the world or one
that went to Hawaii had a bladder tank located in its Portuguese bridge and
there was some talk on T&T about the vessel's CG etc. As I recall, the tank
(about 200 gal.?) worked out well and they drew from it first. Bob, do you
recall commenting on this arrangement a year or two ago?
Ron Rogers
----- Original Message -----
From: "CFE Inc." cfeinc@telus.net
| My plan is to use bladder tanks on deck and in the lazeret for fuel on
the long runs. But before I actually commit I would like to ask the list and
see if there is any experience with them.
|
| Addition of 250 to 300 gal as I only carry 450 with 50 additional in day
tank. 2 Gal hour burn at 1650 rpm, 6.5 knots. no gen etc.
|
| Thanks in advance for any thoughts that might be shared.
Passagemaking-Under-Power Mailing List
Thank you Jeff, I figured I was confused, but someone did temporarily place
a fuel bladder in the Portuguese bridge on a 40 because it was discussed on
the T&T List and many thought that he was raising the CG of the boat too
much.
Ron
----- Original Message -----
From: "Jeff Merrill" jeff.merrill@nordhavn.com
| Hi Ron,
|
| The Nordhavn 40 "Nordhavn" which went around the world in 2001/2002 did so
| using her stock fuel tanks.
|
| The 40 has two fiberglass fuel tanks for a total of approximately 920
| gallons.
|
| The run to Hawaii (2,300 miles) was the longest leg of the trip (Georgs
was
| aboard- you can ask him), but no additional fuel tanks were installed or
| used on any of the legs.
|
| One of the purposes of the trip was to demonstrate that this trip could be
| done on an unmodified hull.
|
| Jeff Merrill - Nordhavn Sales