FYI - GPH with some 69 engine hours

[baz]

Subject: FYI - GPH with some 69 engine hours

I've accumulated some 69 engine hours and during this time consumed some 91 gallons of diesel fuel. I did use the diesel fired Webasto heater for two months during this time and suspect this use to be minimal.

Thus 91 / 69 gives some 1.32 GPH. This number should be slightly higher as I suspect I drifted without engine running while fishing for maybe 15 hours. So this GPH should be more accurately expressed with 91 / 54 or some 1.7 GPH.

Now at $3.25/gallon the cost comes to $5.48 per hour of using the boat while under way.

My speed varied quite a bit during this 54 hours from 4-6 mph and as high as 25 mph. I do not have a histogram of fuel used per speed settings. At the 4-6 mph the MPG were being displayed between 6 and 12.

I do not have the cruise miles for the 54 hrs of engine use, unless its recorded by the Garmin system somewhere.

 

[FlagShip]

For comparison. Same boat, but we tend to run faster on our trips (darn job gets in the way).

91 hours
503 gallons @ $3.02/gal. average

Average fuel burn: 5.53 GPH
Fuel cost: $16.72/hour

We're learning to slow it down and enjoy the journey (unless we're trying to hit slack tide at Deception Pass).

 

[baz]

Yes, retirement (in my case) has benefits.... mind you, retirement expenses also need to be controlled as well. I've noticed that with 'young' passengers onboard they always like more speed, whereas I'm quite content with slower speeds and for avoiding dead heads and bobbing crab buoys more easily. Just 1 month ago coming out of Kingston and going at around 12 mph I ran over 3 logs and that caused two adjacent prop blades tips to be bent out of line by about 3/4" (that cost me ~$700 to get fixed - diver service + prop repair).

AFAIK.... With the R29 S/CB models one really does not need to worry about the tide/current conditions at Deception Pass. These models have plenty of power for the Pass IMO. With the R27/OB even less of a problem. The only concern I have with the Pass is the likelihood of suddenly seeing a whole bunch of small fishing craft as I exit the west side of the Pass with my stern wake that must be annoying for them, as well as having to avoid them.

I took the grandkids and my wife on one of the Edmond's based whale watching boats and on its return to Edmonds the captain decided to give us a close look at Deception Pass and piloted the boat through the Pass and actually hovered inside the Pass under the bridge for several minutes with the boat swinging about and under excellent control... with its massive engine's doing all the work holding the boat in position against the whirl pools and strong current. 😀

 

[FlagShip]

I'm very confident the R-29 can power through Deception Pass, they have some good grunt. I try to hit slack tide, plus or minus 30 minutes in the interest of marital harmony. This is my wife's first 'big' boat, so I'm trying my best to keep things mellow and low stress. We have made runs in a couple of small craft warnings, the boat did great and we did good, too.

 

[BGW]

Subject: FYI - GPH with some 69 engine hours



Thus 91 / 69 gives some 1.32 GPH. This number should be slightly higher as I suspect I drifted without engine running while fishing for maybe 15 hours. So this GPH should be more accurately expressed with 91 / 54 or some 1.7 GPH.

Unless I’m wrong, the 15 hours spent fishing without the engine running are not recorded as ‘engine hours’ and if you were running at 25 mph, you were likely using 10 g/hr during that period. That’s $30/hr+ to get you where you’re going at top speed.

The fastest I’ve ever run with my R27 was 21 mph and that was with the current trying to make Seymour Narrows for slack. At Canadian fuel prices that’s more like $64/hr.


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