View Poll Results: My slowest speed is
3 to 4 knots 38 48.72%
4 to 4.5 knots 15 19.23%
4.5 to 5 knots 10 12.82%
5 to 5.5 knots 5 6.41%
5.5 to 6 knots 0 0%
6 to 6.5 knots 1 1.28%
6.5 to 7 knots 7 8.97%
7 to 7.5 knots 0 0%
7.5 to 8 knots 1 1.28%
8 knots or more 1 1.28%
Voters: 78. You may not vote on this poll

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Old 05-23-2018, 09:14 PM   #21
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About 3.5 knots. Unless there's a pretty stiff wind, no issue with control or crabbing in fairways and such. With a full keel, a side current can keep you busy at the wheel.
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Old 05-23-2018, 10:00 PM   #22
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If I can get the idle to drop down to ~550rpm's I'm doing 6-7kts. That's about as low as she gets. From that point on up to about 1000rpm's each 100 rpm's adds about 1kt. 1000 rpm's equals about 11kts.


WOT at 2150rpms yields about 31.3kts. But she's plenty thirsty at that speed.
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Old 05-23-2018, 10:05 PM   #23
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If I can get the idle to drop down to ~550rpm's I'm doing 6-7kts. That's about as low as she gets. From that point on up to about 1000rpm's each 100 rpm's adds about 1kt. 1000 rpm's equals about 11kts.


WOT at 2150rpms yields about 31.3kts. But she's plenty thirsty at that speed.
Wifey B: Can you keep it idling with no problems at 550 RPM? I would have thought your slow idle would have been more like 700?
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Old 05-23-2018, 10:43 PM   #24
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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.
So what kind of boat DO you have then? I've always wondered....
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Old 05-23-2018, 10:54 PM   #25
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So what kind of boat DO you have then? I've always wondered....
Wifey B: Faster, but no sportfishing boats. We have a friend with a Viking with trolling gears though and we've been on Bertrams and Hatteras' with them. My fave boat is my Baby Riva and it's built for speed, not trolling.
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Old 05-23-2018, 11:13 PM   #26
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Idle in gear is ~700 rpm which produces 6.5-7 kt in calm conditions. Too fast for true no wake zones. I'm in and out of gear as required.
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Old 05-24-2018, 12:23 AM   #27
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My lowest idle is 600 rpm. I really haven’t tracked what my speed is at that but it is probably around 4 knots. I know I have to throttle up to about 800 rpm to move at about 5 knots.
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Old 05-24-2018, 04:47 AM   #28
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As most of the boats are used inshore or along shore few have their GPS in knots.


The inshore charts are in statute miles , as are most GPS.


Statute miles make better bragging rights , "8" as a cruising speed sounds better than "7" ,, "7" sounds better than "6".
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Old 05-24-2018, 09:09 AM   #29
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With no current, wind, tide and such to deal with we idle at about 4.3 knots....just cant remember the last time we actually had dead water!
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Old 05-24-2018, 09:19 AM   #30
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The Columbia is at or near maximum freshet right now. I’m surprised they are going that fast! I went up the Fraser on May 9 and crept up at 3.5-4 kts.
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Old 05-24-2018, 10:01 AM   #31
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I am going to find out this weekend. anyone know what the minimum sustained rpm a leman 135 should be ran at? i don't want to cause excessive ware
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Old 05-24-2018, 11:04 AM   #32
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Wifey B: Ok, call this a huge education of Wifey B. I'm shocked at the results showing half can go at under 4 knots, 2/3 at under 4.5 knots, 3/4 at under 5 knots and 5/6 at under 5.5 knots.

That's almost walking speed. Is hubby's walking speed if I didn't hold him back and mine is almost as bad if others don't slow me down.

I was just blissfully ignorant that one could go and maintain course at those speeds. Thanks for sharing.

Now, curious as to speed my car will go in gear with foot not on gas.
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Old 05-24-2018, 12:02 PM   #33
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Wifey B: Ok, call this a huge education of Wifey B. I'm shocked at the results showing half can go at under 4 knots, 2/3 at under 4.5 knots, 3/4 at under 5 knots and 5/6 at under 5.5 knots.

That's almost walking speed. Is hubby's walking speed if I didn't hold him back and mine is almost as bad if others don't slow me down.

I was just blissfully ignorant that one could go and maintain course at those speeds. Thanks for sharing.

Now, curious as to speed my car will go in gear with foot not on gas.
3.5 k at idle. Maneuverability very marginal due to small rudders and planing hull. Maneuvering to dock relies solely on differential thrust. Start to get usable rudder authority @ 4-5 k.
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Old 05-24-2018, 12:07 PM   #34
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Ah! Now I get it Wifey B. I never could get why you and Hubby were hanging out with a bunch of slow moving trawler folks instead of the fast crowd. You just didn’t know how slow we really are (and want to be).
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Old 05-24-2018, 12:18 PM   #35
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Blue Sky idles at just a tick over 4 knots. However, with the trolling valve engaged I can vary the speed between 0 and 4 knots. But only for fishing; never a good idea to use it while docking.
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Old 05-24-2018, 12:20 PM   #36
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Heck, if you like really slow......

Many times towing strange shaped objects, I was happy to make a knot.
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Old 05-24-2018, 01:15 PM   #37
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Guess outboards are slower at idle or something.
Probably has something to do with the OB props at idle running at 13% or so of max design speed (assuming 800 rpm idle and 6000 rpm rated) vs the diesel running somewhere around 25% of rated at idle. Input power goes up roughly as the cube of the prop speed (if the affinity laws hold for boat props, which I think they do), so a small, slow OB prop won't be drawing/delivering much power compared to its design parameters, either. Or so it seems like from here.
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Old 05-24-2018, 02:40 PM   #38
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About 2 knots at idle
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Old 05-24-2018, 03:09 PM   #39
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Today at 1800 RPM we saw 2.4 Knots a few times, but 5 hrs to go 24 miles and safely tied up at Beacon Rock just below Bonneville Dam.
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Old 05-24-2018, 03:18 PM   #40
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Ah! Now I get it Wifey B. I never could get why you and Hubby were hanging out with a bunch of slow moving trawler folks instead of the fast crowd. You just didn’t know how slow we really are (and want to be).
Wifey B: Oh, I know how slow some of you are. I could make lots of bad jokes here but resisting because as a teacher, I love and nurture those who are slower and don't disparage them.

Thing is, even though you do it slowly, people here do actually cruise and explore and see new places. Typically there are people here cruising in most parts of the world. We love exploring the world by water. This leg is over and we fly home tomorrow for three weeks, but then back and the next leg is Nova Scotia and beyond, more places I've never been. We cruise like the rest of you, just do it faster than some do.
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