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Old 09-17-2023, 04:17 PM   #1
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Seaway coastal cruiser

Hello, new to this site. I own for about a year a Seaway Coastal Cruiser 25. My home water is Lake Erie in Sandusky. I am curious if any other Seaway boat owners are on this site and care to share info. I am new to this type of hull as I always had deep vee boats.
I am curious about propping and motor heights. This boat should cruise at 20 knots and it does but i constantly fight the throttle to keep it there. If I hold full throttle it will get to 27 knots or so but I am definitely maxed out on rpms. At 20 knots I am at 5600rpm. This is on a Suzuki 175hp. Also and Iím sure this is because of lack of knowledge, I canít trim much because the prop wants to blowout. Iím not sure what my next step should be. All I want is to cruise at a reasonable speed and rpm to not work the motor too hard and be comfortable.
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Old 09-17-2023, 04:53 PM   #2
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Old 09-17-2023, 06:43 PM   #3
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Welcome to the forum!

Nice looking boat! Could you post some interior pictures, please.

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Old 09-17-2023, 08:37 PM   #4
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I donít have any interior pics lol. I will this weekend. Layout is similar to a Rosborough . For a family of 3 it works perfectly.
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Old 09-18-2023, 09:15 AM   #5
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If @20 kts rpmís is 5600 whatís rpm @ WOT? Without adding a jack plate can your lower the engine to stop prop from blowing out? CuriousÖ..
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Old 09-18-2023, 10:11 AM   #6
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WOT at 27knots is 6k rpms. It seems to stop at 6k and my speed stays at 27. Itís like driving a truck with 4:10 gears. Revs up and gets loud but no forward momentum. Lol
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Old 09-18-2023, 10:53 AM   #7
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Wanted to mention the motor is mounted on an Armstrong bracket. I need to see which hole it is mounted in.
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Old 09-21-2023, 12:23 PM   #8
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Here are the interior pics
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Old 09-21-2023, 01:18 PM   #9
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Heater

Interesting looking small footprint heater. What mfg,fuel used?
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Old 09-21-2023, 03:06 PM   #10
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That is a dickenson propane. That runs off 12v. My rooftop unit has heat as well on shoreppwer.
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