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S
What’s the Best Trolling Motor Battery for Long Fishing Trips?
starcmr
Tuesday at 10:26 PM
All Things Boats & Boating
Replies
4
Views
36
44 minutes ago
rnlock
R
F
Silly Idea- Making a basic headsail rig for my rowboat
FrogInTweed
Jul 21, 2026
Sailboats
Replies
9
Views
422
58 minutes ago
seasquirt
G
A Frame Masts
Gus7119
Jan 20, 2016
Multihulls
5
6
7
Replies
96
Views
26,966
Yesterday at 8:53 PM
brian eiland
M
Naval Architecture design software
mc_rash
May 3, 2025
Software
Replies
6
Views
2,771
Yesterday at 8:10 PM
rnlock
R
J
boat with submarine at bottom
jamesmatheson
Friday at 7:54 PM
Boat Design
Replies
12
Views
286
Yesterday at 8:00 PM
rnlock
R
M
DIY Yrvind Sextant - Clear Glass - Plan says 1.5mm thick, I found 1.7mm, What to change ?
mustafaumu sarac
Yesterday at 4:54 PM
OnBoard Electronics & Controls
Replies
1
Views
18
Yesterday at 7:21 PM
HelmutSheina
prop tunnels? 33 sport fisher going from 12 to 8 degrees
fstarocka
May 29, 2026
Boat Design
2
Replies
15
Views
1,042
Yesterday at 6:53 PM
fstarocka
small shanty boat cat build log
aleph
Dec 9, 2025
Boatbuilding
2
Replies
28
Views
2,730
Yesterday at 5:28 PM
gonzo
A
50' DeVries-Lentch Ketch Scaldis 1935
andreas2463
Aug 30, 2004
Sailboats
Replies
7
Views
8,433
Yesterday at 4:44 PM
Morrobaysailing
M
Re-design of 8 Foot Dinghy . . .
tpenfield
Aug 18, 2026
Boat Design
Replies
9
Views
471
Yesterday at 3:46 PM
rnlock
R
S
Switzer-Craft
SwitzerMan
Yesterday at 12:13 PM
Wooden Boat Building and Restoration
Replies
0
Views
24
Yesterday at 12:13 PM
SwitzerMan
S
Res-Erecting Old Website
brian eiland
Yesterday at 11:36 AM
Boat Design
Replies
1
Views
37
Yesterday at 11:58 AM
rnlock
R
L
Alternative to fiberglass for a Caledonia Yawl
laukejas
Aug 30, 2026
Boatbuilding
2
3
4
Replies
46
Views
801
Yesterday at 11:53 AM
rnlock
R
B
Simple and simplistic stability test of an humble RC Boat
Baldr
Friday at 5:43 AM
Stability
Replies
11
Views
166
Yesterday at 10:51 AM
Baldr
B
G
modern classic 37'
GeoffD
Aug 14, 2026
Motorsailers
2
Replies
19
Views
557
Yesterday at 9:01 AM
TANSL
T
N
Albin 28 Hydrodynamics
npsteeb
Yesterday at 8:51 AM
Hydrodynamics and Aerodynamics
Replies
0
Views
26
Yesterday at 8:51 AM
npsteeb
N
G
Freeboard splashwell Panga hull
grouper242
Tuesday at 12:21 PM
Boat Design
Replies
4
Views
84
Yesterday at 8:30 AM
Skip Johnson
S
J
Wood/epoxy composite moisture movement
jmwoodring
Jul 15, 2026
Materials
2
Replies
20
Views
1,210
Yesterday at 4:27 AM
tane
T
M
Cat bulkhead design
montero
Mar 20, 2026
Multihulls
7
8
9
Replies
133
Views
9,770
Yesterday at 3:40 AM
montero
M
A
Boat Builder Needs Advice: Victron vs. Bluetti/EcoFlow/Jackery for Off-Grid Fit-Out?
Anchor and Flow
Friday at 3:44 AM
Boatbuilding
Replies
5
Views
123
Tuesday at 9:32 PM
Anchor and Flow
A
Navier Stokes Solved -
Paul Scott
Tuesday at 2:13 PM
Hydrodynamics and Aerodynamics
Replies
5
Views
88
Tuesday at 9:02 PM
philSweet
C
Solar power catamaran prop size
caymantri
Sunday at 7:46 PM
Multihulls
Replies
9
Views
152
Tuesday at 7:14 PM
montero
M
G
20m carbon rig for Dazcat 1495 - rotating?
gregjohnson1024
Aug 12, 2026
Multihulls
Replies
4
Views
261
Tuesday at 3:19 PM
RyanN
R
Conceptual Design Amphibious AI Rescue Aircraft Series (GLARE Trimaran Hull & Battery Electric Prop)
Rabah
Jun 17, 2026
Hydrodynamics and Aerodynamics
2
3
Replies
34
Views
2,636
Tuesday at 12:24 PM
Rabah
R
L
Pontoon Boat Conversion to Sailboat
lowe210
Nov 15, 2008
Multihulls
3
4
5
Replies
69
Views
53,976
Tuesday at 5:18 AM
Jacks Playpen
J
O
Featured
Multihull Structure Thoughts
oldmulti
May 27, 2019
Multihulls
335
336
337
Replies
5,041
Views
1,731,367
Tuesday at 1:37 AM
oldmulti
O
Fast Junk Rig cruising, on a Balkan Proa.
rael dobkins
Nov 25, 2024
Boat Design
Replies
3
Views
2,605
Monday at 11:58 PM
rob denney
R
P
Eastern NC Vernacular Craft
pyrrxa
Monday at 9:36 PM
Sailboats
Replies
0
Views
47
Monday at 9:36 PM
pyrrxa
P
J
Aftmast rigs???
jdardozzi
May 28, 2002
Sailboats
82
83
84
Replies
1,255
Views
532,251
Monday at 4:13 PM
brian eiland
Splash rail profile
fallguy
Apr 1, 2026
Fiberglass and Composite Boat Building
2
3
4
Replies
46
Views
3,520
Monday at 3:30 PM
fallguy
0
Does anyone know what this is?
01x1buell
Monday at 11:35 AM
Powerboats
Replies
1
Views
86
Monday at 2:05 PM
philSweet
B
Jeff Spira boat plans
Boat mad rich
Jul 3, 2022
Wooden Boat Building and Restoration
4
5
6
Replies
84
Views
81,914
Monday at 6:55 AM
Walt Hansen
W
W
Spira boat plans Pacific Dory 18 to 20 foot
Willbill77
Jul 29, 2026
Boatbuilding
Replies
1
Views
177
Monday at 6:48 AM
Walt Hansen
W
3 meter HDPE sailing dinghy
Sebastian De La Maza
Dec 2, 2024
Boat Design
2
3
Replies
35
Views
13,396
Monday at 1:54 AM
row
R
T
Power Multi Hull Shape
tropostudio
Jun 16, 2021
Boat Design
2
Replies
19
Views
7,105
Sunday at 11:43 AM
MASSGPR
M
M
How did the old timers design hulls
MinorThreat
Aug 13, 2024
Boat Design
3
4
5
Replies
69
Views
13,714
Sunday at 9:36 AM
Howlandwoodworks
Multihull Motorsailors
brian eiland
Aug 31, 2026
Boat Design
Replies
7
Views
236
Sunday at 9:22 AM
brian eiland
D
23’ center console monohull
Daniel Harrell
Apr 17, 2025
Boat Design
Replies
7
Views
4,478
Saturday at 5:55 PM
kapnD
K
R
Cat project I/O to twin OB
Restomod
Jul 23, 2026
Fiberglass and Composite Boat Building
Replies
7
Views
355
Saturday at 5:32 PM
kapnD
K
WishBone Sailing Rig
brian eiland
Aug 17, 2003
Boat Design
22
23
24
Replies
348
Views
305,964
Saturday at 4:43 PM
brian eiland
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