1992 27 OFFSHORE Power and Performance

Optimizing the performance of Boston Whaler boats
JanaSea27OS
Posts: 6
Joined: Mon Dec 31, 2018 5:29 pm

1992 27 OFFSHORE Power and Performance

Postby JanaSea27OS » Wed Jan 23, 2019 4:23 pm

Starting this topic concerning the power and performance of my 1992 27 OFFSHORE as per Jim's recommendation. Hopefully it will be of interest, and I know I can learn from the experience and knowledge of others on this forum. I admit up front I am no expert , just some experience with the hull and power.

My 1992 27 OFFSHORE is powered by twin 2008 250 ETECS
I use it exclusively in fishing the coastal areas off Newport Oregon, which gets its share of rough ocean conditions.
On a nice ocean ( 2 ft wind waves, 2 ft swell, 8 sec period) it cruises at about 22 - 24 kts. very comfortably with about a .8 to 1 gal burn per mile.
Slowing down in steeper seas results in 1.5 to 2 gal burn at about 12 - 15 kts.
These engines provide enough low end torque to get up on plane very quickly even with a load.
The hull design basically eats up our afternoon wind chop, with a smooth dry ride.
I have owned it for 5 years and put 1800 hours on the engines. Regular maintenance and a great tech and they purr.

Thanks for the opportunity

Mr 88
Posts: 15
Joined: Tue Aug 07, 2018 8:17 pm

Re: 1992 27 OFFSHORE Power and Performance

Postby Mr 88 » Wed Jan 23, 2019 7:13 pm

I wonder how my 1987 27 FC with inboards will handle the 3 -4 ' waves. Fish Lake Ontario and the waves are usually closely spaced, more in the 3-4 second gap. Picked her up in the fall and never sea trialed her for various reasons. I would assume the hull designs are the same as this model was made from 83-90 and yours from 91-98. The big difference may be the weight and where the Inboards are mounted vs your outboards. Also I have a 8" fixed keel which may or may not affect it hammering through the rough stuff. Not expecting much more than 1 mpg at cruise .

JanaSea27OS
Posts: 6
Joined: Mon Dec 31, 2018 5:29 pm

Re: 1992 27 OFFSHORE Power and Performance

Postby JanaSea27OS » Fri Jan 25, 2019 9:40 pm

From the hull standpoint I would think they would be similar. The fixed keel might be better for tracking although I have never had to fight the helm. It does have a Seastar hydraulic steering.
I have owned inboards as well and find both the outboards and inboards to be a little troublesome backing into my slip when there is a breeze or tide.