What is your average speed at sea?

[joedavies]

Hi all,

My university design project is an autonomous life saving device for recreational boaters ... its pretty awesome.

I need to work out the speed required for the device so I can buy the motors.

If you could reply with your average speed in KNOTS at sea I would be very grateful.

This forums input has been exceptional thoughout this project, I will be posting my final submission on here for all to see soon

Thanks

Joe

 

[Bandit]

Sorry Joe

Speed is not RPM

RPM is engine speed.

My boat speed through the water is about 19 knots

Good luck

 

[prv]

I plan on 5.5 knots. My mate bombs about at 25.

I suspect your autonomous MOB drone is impracticable

Pete

 

[Tradewinds]

(It's forum's )

6 kt for my saily boat - or is it aimed at motorboaters?

 

[Nigelpickin]

Sorry Joe

Speed is not RPM

RPM is engine speed.

My boat speed through the water is about 19 knots

Good luck

Hi joe

Agree with above, happy to help but need a little clarification.
FWIW our average speed would be around 13kts but we never travel at that speed
We are doing either 7 or 20....if you see what I mean?
Project sounds like fun, see you on Dragons Den anytime soon?

 

[rubberduck]

25 knts ish

 

[david_bagshaw]

7.5 kn through the water, if lucky another 2kn plus from the tide.

 

[mlines]

Probably 3000-3500 rpm

 

[rbcoomer]

Average probably about 15kts, but like others have said almost never travel at that speed - usually either 5kts, 22kts or 35kts... We spend quite a bit of time 'pootling' and quite of bit of distance covering at around 22kts as that's a comfortable cruise. When we're out with friends cruising in company however, the petrol fumes tend to affect the grey matter and WOT becomes the preferred 'cruise'...

 

[Momac]

3250rpm
.

 

[Ian h]

Cruise at 35 - 40 knots sea conditions dependant.
If its a short blast to Cowes then WOT 3800 RPM & 46 knots .

 

[superheat6k]

40' Flybridge cruiser

Fuel price > £1.10 / lt ~8 knots
Fuel price < £0.80 / lt ~16 knots

10 - 13 knots is not a viable speed as She is like the Grand Old Duke of York - when only half way up - neither up nor down

Last mile before the River WOT, so around 22 knots clean bum, to clean the muck of the turbos.

 

[[2068]]

Average speed is 18-22 knots, depending on sea state.
Rpm is 2800-3200.

 

[Mike k]

Average speed is 18-22 knots, depending on sea state.
Rpm is 2800-3200.

2600 rpm and 13kts

 

[colingr]

25 to 30 knots depending in crew and weather. +/- 3500 rpm

 

[maverickofpoole]

3000 - 3200 rpm for our preferred cruising speed of 18-22 knots however the harbour we are based in has a speed limit in main channels of 10 knots so I guess our average would be in the region of 12-14 knots

 

[Jurgen]

Bible speed 8 knts, need to get there in a hurry 24 knts, tide and down hill 30 knts.
Yes that last statement is true, was having a kip on the way back from Guernsey and the wife said she opened up the taps and 30 knts was achieved &#55357;&#56834;

 

[dustywings]

I cruise at 2000 rpm doing 23 knots, max speed is 32 at 2200 rpm.

 

[Barleycorn]

Generally aim at 1800 RPM, about 4 gallons an hour, and 8 knots through the water.

 

[Alpha22]

About 13 knots @ 2500rpm