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Boat Design
Discuss boat design concepts, projects, plans, reviews, resources, and general design topics.
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M
Training wheel floats for a Stellar SES Surfski? Or buy?
mitchgrunes
Wednesday at 8:17 PM
Replies
11
Views
131
Yesterday at 3:01 PM
portacruise
P
Hickman Sea Sled Information
DogCavalry
Feb 12, 2021
13
14
15
Replies
217
Views
47,287
Thursday at 11:16 AM
DogCavalry
T
outboard bracket redesign
Toepfer Marine
Jun 22, 2026
Replies
7
Views
359
Thursday at 8:38 AM
fallguy
More of a trailer design challenge?
rebar
Jul 6, 2026
2
Replies
19
Views
561
Wednesday at 8:23 AM
Skip Johnson
S
F
Sturdy 14 Sailing Dinghy
flo-mo
Jun 15, 2026
Replies
12
Views
801
Wednesday at 6:29 AM
flo-mo
F
C
barge to service moorings
Chuck Losness
Oct 8, 2024
Replies
11
Views
2,405
Tuesday at 9:44 AM
Chuck Losness
C
S
what would happen if a slap a 10hp, 100lbs outboard on Hobie 18, on the rear cross member?
Squidly-Diddly
Jul 9, 2026
Replies
10
Views
1,432
Monday at 3:05 PM
philSweet
Redesigning the Pilgrim 40 Trawler / Canal Boat / Coastal Cruiser
brian eiland
Jan 24, 2017
2
Replies
29
Views
32,639
Monday at 11:28 AM
brian eiland
N
New Sportfish CAT Design
NeumannKG
Jul 10, 2026
Replies
10
Views
254
Monday at 11:14 AM
brian eiland
A
Help with a Delcraft alum boat
Angelfish
Jul 4, 2007
2
Replies
20
Views
17,677
Monday at 7:52 AM
debbie_holt
D
O
The Canoe-maran
ouchmytoe
Jul 9, 2026
Replies
5
Views
211
Sunday at 4:45 AM
Will Gilmore
How to design aluminum dinghy
yabert
Dec 19, 2024
2
Replies
25
Views
7,484
Jul 11, 2026
montero
M
M
Rocker Bottoms
mlp
Aug 16, 2005
2
Replies
24
Views
9,060
Jul 11, 2026
rwatson
R
T
Featured
Twin I/O to Twin Outboard Conversion Project
tpenfield
Oct 10, 2024
28
29
30
Replies
439
Views
84,278
Jul 8, 2026
tpenfield
T
R
Spiling and planking
RSudama
Jul 5, 2026
Replies
3
Views
176
Jul 6, 2026
jehardiman
S
What is this method of planking is called? 100 hours of googling with no results
serdarbas
Feb 23, 2024
Replies
4
Views
2,497
Jul 6, 2026
HelmutSheina
D
New here and need some info - Chincoteague scow frame spacing
DE waterpirate
Jul 3, 2026
2
Replies
16
Views
484
Jul 5, 2026
DE waterpirate
D
W
Thank you Mr Spira! Looking for Dory 19 plans
wildeagle01
Jul 4, 2026
Replies
1
Views
153
Jul 5, 2026
HelmutSheina
S
Looking for a long range expedition aluminum power catamaran design
Silvard
Mar 20, 2025
5
6
7
Replies
103
Views
21,396
Jul 3, 2026
brian eiland
S
Hull Design Choices for Very Fuel Efficient Live-aboard
Scow
May 14, 2026
3
4
5
Replies
60
Views
3,670
Jul 2, 2026
montero
M
B
Poll
Poll
Future of small scale sail freight?
BMP
Jun 30, 2026
2
Replies
18
Views
575
Jul 2, 2026
gonzo
T
Hains Hunter 600 C 1987
Troys
Jun 30, 2026
Replies
0
Views
122
Jun 30, 2026
Troys
T
K
Spira pangas and hello
Kiry laufer
May 13, 2026
2
Replies
27
Views
1,537
Jun 27, 2026
Kiry laufer
K
B
Looking for mal lowe tug plans
Brianheidel
Jun 26, 2026
Replies
0
Views
154
Jun 26, 2026
Brianheidel
B
K
Roll reduction solutions
kapnD
Feb 19, 2026
2
3
Replies
30
Views
2,305
Jun 26, 2026
fallguy
B
low cost cargo boat
BMP
Jun 22, 2026
2
Replies
22
Views
1,073
Jun 26, 2026
gonzo
K
Spira floor ribs
Kiry laufer
Jun 8, 2026
2
Replies
23
Views
1,114
Jun 25, 2026
Kiry laufer
K
B
"Fast" Scow Design from 1800's
BoatEngineer
Jun 21, 2026
Replies
9
Views
542
Jun 23, 2026
HelmutSheina
P
Sailboat cross section
Papety
Jun 23, 2026
Replies
3
Views
277
Jun 23, 2026
philSweet
V
The flapping foil propulsion drive based on Cardan gear mechanism
Victor R
May 23, 2026
2
3
Replies
37
Views
2,463
Jun 22, 2026
Victor R
V
N
Bass boat 540 plan
Nevres.G
Dec 16, 2025
Replies
2
Views
1,158
Jun 22, 2026
Nevres.G
N
E
pontoon powered by sea doo ( jet ski )
ericrunner
Sep 11, 2010
2
3
Replies
38
Views
59,054
Jun 21, 2026
HelmutSheina
B
Quadmaran
BMP
Jun 18, 2026
Replies
10
Views
580
Jun 19, 2026
HelmutSheina
B
Length/seaworthiness
BMP
Jun 13, 2026
2
Replies
23
Views
1,120
Jun 16, 2026
skaraborgcraft
S
D
Why Proportion Still Matters
Davidycm
Jun 13, 2026
Replies
1
Views
356
Jun 13, 2026
gonzo
D
Possibility of building a reinforced concrete/ferrocement hull in sections
Dong Hyeon Kim
Jun 11, 2026
2
Replies
18
Views
1,059
Jun 12, 2026
gonzo
I
Designing my ultimate river sled
Impracticallaty101
Jun 9, 2026
Replies
3
Views
542
Jun 10, 2026
ondarvr
S
Bilge Maintenance in Flat Bottom Steel Boats
Scow
May 18, 2026
2
Replies
21
Views
1,344
Jun 10, 2026
gonzo
C
Looking for a rowboat design
Christopher Sandlin
Jan 31, 2026
2
Replies
28
Views
3,381
Jun 9, 2026
Horton HCCI
H
K
Foredeck hatches
kapnD
May 31, 2026
Replies
6
Views
565
Jun 5, 2026
skaraborgcraft
S
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