prop in tunnel
#1
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Joined: Mar 2025
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just completing my drawings
26 ft trailered,
Cummins 355 diesel
44 degree deadrise station 2
27 midlength W.L
1100 l fuel , just in case
speed max 43 knots half load
30 knots cruise
prop in tunnel enables ramp splash
cannot post drawings, site will not allow
26 ft trailered,
Cummins 355 diesel
44 degree deadrise station 2
27 midlength W.L
1100 l fuel , just in case
speed max 43 knots half load
30 knots cruise
prop in tunnel enables ramp splash
cannot post drawings, site will not allow
#3
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Joined: Nov 2002
Posts: 4,176
Likes: 333
From: ankeny,ia.
44 degree dead rise… at the transom?
The prop tunnel isn’t good for lift,
( for a planing hull) neither is a 44*
dead rise, I’m not seeing this getting
to 49 mph.
The prop tunnel isn’t good for lift,
( for a planing hull) neither is a 44*
dead rise, I’m not seeing this getting
to 49 mph.
Last edited by JaayTeee; 03-22-2025 at 10:51 AM.
#4
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Joined: Aug 2019
Posts: 1,223
Likes: 414
From: BC
Tunnels behave a bit like a jet system. A shrouded prop at the very least.

A 44° deadrise means your hull has almost a 90° vee. Not great for lift, shallow running, or stability. Maybe it was a typo?
Are you proposing your prop tunnel location where the delta pad would be?
Let's see some pics.



