Boat Speeds

[LippCJ7]

Re: Boat Speeds

Global Positioning System, but in my case your acronym would be accurate as well or so it would seem sometimes....

 

[sublauxation]

Re: Boat Speeds

80ish Sylvan 18' tinny with 90 Evinrude and 15 pitch SS prop I get 42 mph on GPS at 5100RPM with my wife, 3 young kids and 12 gallons of gas. I get 44 mph by myself, so I guess that must mean I'm the major weight issue.

 

[Joshua Nichols]

Re: Boat Speeds

87 Four Winns 170 Horizon
4.3l 2 bbl 5200 RPM
14 1/2- 19pitch
GPS 48 mph
Wife, dog, full tank and myself..
I got a 21 pitch but have yet got a chance to run it..

 

[Chris1956]

Re: Boat Speeds

Gee is it too hard to say "48 MPH according to GPS"? We have to abbreviate as "48 GPS"?

Just a poke at those who use incorrect or unclear english.

I did refrain from correcting another poster by saying "My husband an I".

16 foot speedboat 135HP Merc V6 with 21" pitch prop, 62 MPG according to GPS at 6200RPM.

 

[jkust]

Re: Boat Speeds

My 18 foot Chaparral slightly underpowered with a carb 4.3liter is 2900lbs dry weight plus 33 gallons of gas, 4 people, coolers, gear, etc top speed anytime is 46mph on gps at 4800 rpms. Just me, gear and 10 gallons of gas best ever speed was 51.2mph at 4900+ rpms with my original Black Max 21p, alum prop marginally dinged up. My aluminum 21pitch Hustler takes about 3mph off top end. She is no speedster but will take waves like an over 20 footer.

 

[esobofh]

Re: Boat Speeds

2008 Crestliner 1462V Aluminum Boat
2010 Evinrude E-TEC 25HP
Weights: Boat 140lb; Me 240lb; Outboard 146lb; all other ~100lb

Spinning 5800 RPM with stock prop = 47.8 Kph (29.7 mph)

 

[RotaryRacer]

Re: Boat Speeds

Gee is it too hard to say "48 MPH according to GPS"? We have to abbreviate as "48 GPS"?

Just a poke at those who use incorrect or unclear english.

I did refrain from correcting another poster by saying "My husband an I".

16 foot speedboat 135HP Merc V6 with 21" pitch prop, 62 MPG according to GPS at 6200RPM.

Talking about correcting people and look at what you did....

WOW that is some good economy.

My 2004 180 Freedom with a 150HP Evinrude (direct injection) consistently does 44.7 MPH on GPS with pretty much any load (wife, kids, +2 adults, and 30 gallons of gas). When alone and light on gas it will hit 47 pretty easily. Oddly, it starts to chinewalk right as I want to give it a little more trim to get that last 1-2 mph.

My 1981 180 Marquise with a 165HP Chevy Inline Six, Mercruiser pre-alpha, will run 43-44 MPH on GPS consistently.

 

[PWH1]

Re: Boat Speeds

1997 Glastron GS-160
90 Johnson SPL
16 Gallon Tank
Me + wife
42/43 MPH tracked on GPS.

 

[V153]

Re: Boat Speeds

Talking about correcting people and look at what you did....

WOW that is some good economy.

I'll say! 62 Miles Per Gallon? Hee hee hee

 

[snowman48047]

Re: Boat Speeds

2000 Lund Alaskan SS 20' with 2001 Merc 50hp Bigfoot, just me and 27 gallons of fuel about 24-25MPH.
1982 Starcraft 220V 22' with 1992 Force 150, 460lbs of peoples and 25 gallons of fuel about 39-40MPH.

No idea what props.

 

[mcgyver210]

Re: Boat Speeds

1996 Ebbtide Mystique 2100
5.7L Alpha 1 Gen 2
50 gal fuel
14 1/8 19 pitch SS Prop
3 people & 1 dog plus gear
44.8 GPS max so far 4700 RPMs using Navionics Track on IPhone

 

[TombigbeeMan]

Re: Boat Speeds

1989 Stratos 266FS with an 89' 110hp V4 Evinrude. 6" jack plate and 18 pitch SS prop, 14 gal of fuel with two people at 5700RPMs it will run 42mph according to GPS. Planning on playing with a couple of props this summer.

 

[tswiczko]

Re: Boat Speeds

1989 Mach1 Magnum MV2450 (24')
5.7L 270 hp.
Alpha 1 gen 1
14 1/4" x 22 pitch prop
56 gal.fuel
#4025 empty
wot 43 knots (49 mph) gps.

 

[trdan]

Re: Boat Speeds

1974 Fabuglas 17 with 1974 Evinrude 85hp V4, 13 x 17 Solas alum. prop
Just me and 6 gals of gas, minimal equipment onboard,
43mph GPS @ 5500 rpm.

 

[dragginanchor]

Re: Boat Speeds

1989 Bayliner 1750 (17' bowrider with 2.3L cobra)
43 GPS @5400 RPM with hustler 17p
43 GPS @5200 RPM with hustler 19p
Cruises nice and quiet 30 MPH @ about 4000 RPM
Guess that's all she's got cap'n..

 

[evinrude20]

Re: Boat Speeds

My brother in law's 2001 triton SF21 fully loaded with a yamaha vmax 200 ox66 23" prop, 58 mph

 

[AZBoatDreamer]

Re: Boat Speeds

Sorry a Little off Topic and thread HighJack.

Can I use my Portable GPS that I use in my car to get GPS speed in the Boat.

 

[jigngrub]

Re: Boat Speeds

Sorry a Little off Topic and thread HighJack.

Can I use my Portable GPS that I use in my car to get GPS speed in the Boat.

Yup!

 

[AZBoatDreamer]

Re: Boat Speeds

OK, I thought I had to get some kind of Marine GPS.

Thanks.

 

[NYBo]

Re: Boat Speeds

OK, I thought I had to get some kind of Marine GPS.

Thanks.

For charts, yes (unless your GPS accepts charts on removable media); for speed over ground, no.