View Poll Results: My slowest speed is
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3 to 4 knots
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39 |
49.37% |
4 to 4.5 knots
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15 |
18.99% |
4.5 to 5 knots
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10 |
12.66% |
5 to 5.5 knots
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5 |
6.33% |
5.5 to 6 knots
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0 |
0% |
6 to 6.5 knots
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1 |
1.27% |
6.5 to 7 knots
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7 |
8.86% |
7 to 7.5 knots
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0 |
0% |
7.5 to 8 knots
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1 |
1.27% |
8 knots or more
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1 |
1.27% |
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05-23-2018, 04:21 PM
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#1
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Guru
City: Fort Lauderdale. Florida, USA
Join Date: Jan 2014
Posts: 21,449
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How Slow Can You Go?
Wifey B: Seriously, not doing limbo, but I just saw Crusty talk about 4.5 knots and ASD talk about 6 knots and I guess on full displacement and on others with small engines you can go pretty slow, but I was surprised at 4.5 on the Selene and 6 on a Yachtfisher. I don't have those speeds, not even at idle. In gear it's going to go faster. So, the question is, in gear, not going in and out, but left in gear, no current or wind with or against, what is your slowest speed. Also, must be a speed that allows you to maintain course.
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05-23-2018, 04:43 PM
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#2
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Veteran Member
City: Tromso
Join Date: Feb 2018
Posts: 83
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Around 3 knots at idle (~450 rpm), even less when engaging the twin disc slip lever. Old FV
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05-23-2018, 04:46 PM
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#3
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TF Site Team
City: Westerly, RI
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 4,162
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Around 3.5kts, maintaining course is possible but requires a bit of work.
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05-23-2018, 04:54 PM
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#4
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TF Site Team
City: Jacksonville
Join Date: Nov 2008
Posts: 11,683
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Don’t they both have ~2.5 knots of contrary river current so aren’t they are going ~7 and 8.5 knots through the water?
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05-23-2018, 04:59 PM
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#5
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Guru
City: Fort Lauderdale. Florida, USA
Join Date: Jan 2014
Posts: 21,449
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Quote:
Originally Posted by Larry M
Don’t they both have ~2.5 knots of contrary river current so aren’t they are going ~7 and 8.5 knots through the water?
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Wifey B: Not sure....perhaps. Would make sense.
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05-23-2018, 05:02 PM
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#6
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Guru
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,966
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My idle in neutral is about 800; 700 in gear. But that is too shaky for anything but docking. At 1000 I’m still slow but smooth as a gas engine.
__________________
Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
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05-23-2018, 05:05 PM
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#7
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Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
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Quote:
Originally Posted by Larry M
Don’t they both have ~2.5 knots of contrary river current so aren’t they are going ~7 and 8.5 knots through the water?
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Yes, they are bucking a steady current, that will increase to maybe 4-5 knots as they approach Bonneville.
There is a reason why most of us slow boaters take note of tides and currents.
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05-23-2018, 05:25 PM
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#8
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Guru
City: Adelaide
Vessel Name: Kokanee
Vessel Model: Cuddles 30 Pilot House Motor Sailer
Join Date: Jul 2012
Posts: 3,218
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At idle, I do just under 3 knots. The A/P will hold a steady course at this speed in calm weather/water.
In very rough water 3 knots is sometimes my top speed as well.
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05-23-2018, 05:35 PM
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#9
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,835
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I can do 4 knots or so, but it's certainly not good for the engine other than for short durations. For proper oil pressure and engine temperature 6 knots would be the slowest speed I would cruise at and feel the engine was operating at recommend oil pressure and engine temperature.
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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05-23-2018, 05:47 PM
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#10
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Master and Commander
City: Vallejo CA
Vessel Name: Carquinez Coot
Vessel Model: penultimate Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 12,559
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We idle at 3 knots. Idling doesn't keep the engine lubricants warm enough, however. Thus, for extended periods, the minimum speed is 5.5 knots, about a half-knot less than cruising speed and 2 knots below maximum boat speed. Three-knot minimum speed is too fast while docking, so much of the time will be coasting in the fairway except when making a sharp turn.
__________________
Kar-KEEN-ez Koot
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05-23-2018, 05:53 PM
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#11
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Guru
City: Seattle
Vessel Name: AZZURRA
Vessel Model: Ocean Alexander 54
Join Date: Aug 2017
Posts: 4,309
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I can do 0 kts. One engine forward and one engine in reverse.
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05-23-2018, 05:55 PM
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#12
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TF Site Team
City: Brisbane
Vessel Name: Insequent
Vessel Model: Ocean Alexander 50 Mk I
Join Date: Mar 2012
Posts: 4,262
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At idle I'm in the 4-4.5 range. I usually spend a few minutes at the end of each trip at that speed, AP holding course fine, while rigging fenders and mooring lines. In the river that can mean 2.5 or 6 depending on current direction. When its about 4 I know I have slack tide for entering the fairway, across current, before turning into my slip. Otherwise 6 would be as low as I go.
__________________
Brian
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05-23-2018, 05:59 PM
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#13
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Master and Commander
City: Vallejo CA
Vessel Name: Carquinez Coot
Vessel Model: penultimate Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 12,559
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Quote:
Originally Posted by tiltrider1
I can do 0 kts. One engine forward and one engine in reverse.
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Does the spinning make you dizzy?
__________________
Kar-KEEN-ez Koot
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05-23-2018, 06:17 PM
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#14
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Technical Guru
City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
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About 4.7kts at 525rpm, dead idle.
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05-23-2018, 07:07 PM
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#15
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Guru
City: Beaverton, Ontario
Vessel Name: Looking Glass
Vessel Model: Carver 370 Voyager
Join Date: Nov 2012
Posts: 1,240
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I can do 3 or less at idle, but as others have said, I need 6 to 6.5 to get to operating temperature and get the oil pressure up. No problem with control at idle unless in a following sea.
__________________
Allan
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05-23-2018, 07:14 PM
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#16
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Guru
City: Queensland
Vessel Model: Milkraft 60 converted timber prawn trawler
Join Date: Jul 2016
Posts: 5,482
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Clicked in gear we do 5 with clean bum and no current.
Big fan so plenty of water over the rudder and no problem steering or on auto.
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05-23-2018, 07:44 PM
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#17
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Guru
City: West Coast
Join Date: Apr 2014
Posts: 1,790
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In idle with both gears engaged in flat calm conditions, I go 6+ knots (enough to get in trouble occasionally in the 5 knot zones).
But, since mine is primarily a fishing boat, I have trolling gears, which allow me to go as slow as 1.2 - 1.4 knots. (And AP has always worked fine even at those speeds.)
Heading into even a little current I am going backwards over ground. So maybe the correct answer is even slower, if negative speeds count.
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05-23-2018, 08:12 PM
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#18
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Guru
City: Fort Lauderdale. Florida, USA
Join Date: Jan 2014
Posts: 21,449
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Quote:
Originally Posted by MYTraveler
In idle with both gears engaged in flat calm conditions, I go 6+ knots (enough to get in trouble occasionally in the 5 knot zones).
But, since mine is primarily a fishing boat, I have trolling gears, which allow me to go as slow as 1.2 - 1.4 knots. (And AP has always worked fine even at those speeds.)
Heading into even a little current I am going backwards over ground. So maybe the correct answer is even slower, if negative speeds count.
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Wifey B: Trolling gears are cheating. I've been on a couple of boats with them and it's sort of freaky cool. We don't have such.
And we don't have idle below 7 to 8 knots either. Two factors-Planing hulls and big engines. Actually think our center console will go slower. Guess outboards are slower at idle or something. Not sure why, but looked up the chart and shows 6 knots at 1000 RPM and I don't know if it will go slower. I've only been on it a couple of times as it's not for our use.
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05-23-2018, 08:24 PM
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#19
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Guru
City: Kitimat, North Coast BC
Vessel Name: Badger
Vessel Model: 30' Sundowner Tug
Join Date: Jul 2012
Posts: 5,946
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In some places in BC I could be in full throttle forward and be going 10 knots backwards.
__________________
"The most interesting path between two points is not a straight line" MurrayM
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05-23-2018, 08:58 PM
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#20
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Guru
City: SF Bay Area
Vessel Model: Tollycraft 34' Tri Cabin
Join Date: Feb 2011
Posts: 12,569
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Quote:
Originally Posted by tiltrider1
I can do 0 kts. One engine forward and one engine in reverse.
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Sounds like making yourself 360 degree nuts; not knots!! Dizzy yet?
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