15-foot gandelow plans - information about the contents of … · these 'exploded' views...

15-foot Gandelow Plans - Information about the contents of this free PDF

CONTENTS

Page 2: Views of the boat in plan, side view, from stem and stern and in 3D.

Page 3: The dimensions of the 15-foot gandelow in a 'Lines Table', sometimes called a 'Table of Offsets'.

Page 4: Diagrams showing the shapes of the planks (strakes) as they would be when cut out and laid flat.

Pages 5 to 13: Widths and top-of-plank dimensions of all nine of the molds / frames used for building a the 15-foot gandelow.

4: Top-of-plank dimensions on the transom and stern post.

Page 15: Dimensions of the parts of the stem and stern post and of the transom.

Page 16: Angles and offsets of the rolling bevel on the first butterfly plank (B1).

Please note that:

- This PDF is intended to be printed out A3 size (US Ledger, 11 x 16.5 inches).

- All the dimensions are in decimal inches. A conversion table to fractions of inches is below.

- The photographs of the frames / molds are taken from the stern of the boat (looking forward) and show their rear face. The frames

should be fixed so they are vertical (at 90 degrees to the Datum line - not at right angle to the slope of the floor).

DISCLAIMER: These plans and dimensions are provided only as a guide. They are intended to be used by experienced boatbuilders

- who will need to scale up the molds / frames to full size using the measurements provided.

© 2017 - Patrick Beautement, Beautement Boats [Version 1-3, draft, updated 24 Apr 2017 - pages 4, 15 corrected. Page 16 added]

Plans with Imperial and Metric measurements and detailed explanations are to be published in

early 2018. They will be sold through the author's website - see www.beautement.com/books.htm.

Abbreviations used: B-1, B-2 = Butterfly planks one and two; CL = Centreline; Gar - Garboard; FP = Front Perpendicular;

HBr = Half-breadth; SPs = Station Positions; ToP = Top of plank; TP = Transom perpendicular; VW = Visible width.

These views of the 15-foot gandelow were generated using the 'Delftship' software and

the dimension data from the 'Lines Table' page of this document.

This model gives a general impression of the shape and appearance of the boat.

© 2017 - Patrick Beautement, Beautement Boats

15-foot Gandelow - Profiles and 3D view

These 'exploded' views of the planks / strakes of the 15-foot gandelow were generated using the

'Delftship' software and the dimension data from the 'Lines Table'.

They show how the model thinks the planks might look after they were cut out and laid flat.

These views give a general impression of the shape and appearance of each plank / strake.

Note for more advanced readers: the black curved lines are the waterlines and 'buttock lines' which,

with the stations, provide a grid system used in fully detailed plans.

15-foot Gandelow - 'Exploded' view of the planks / strakes


STEMSTERN

Width of Mold at Top of Planks (inner edge of plank / outer edge of floor)

Sheer 25.75"

B2 - 22.88"

B1 - 19.25"

Gar 15.63"

Floor 11.5"

Screwed to front of Saddle

He

igh

t o

f T

op

of P

lan

ks a

bo

ve

To

p o

f F

loo

r a

t C

en

tre

line

Sh

ee

r 1

8.8

8"

5.5

0"B1

- 9

.88"

B2

- 1

4.4

4

0 5 10 15 20 25 30 35 40 45 50 55 60cm

0 3 96 12Inches 15 18 21 24

Station 1

68


Top of Floor

76 degrees

Centreline

15' Gandelow Frames

At 1" = 4"

NOTE: Rear side of

Frame / Mold is shown


Sheer 41.13"

B2 - 37.13"

B1 - 33.00"

Gar 28.75"

Floor 23.88"


He

igh

t o

f T

op

of P

lan

ks a

bo

ve

To

p o

f F

loo

r a

t C

en

tre

line

Sh

ee

r 1

8.3

1"

Ga

r 5.3

8"

B1

- 9

.63"

B2

- 1

4.0

0"

0 5 10 15 20 25 30 35 40 45 50 55 60cm

0 3 96 12Inches 15 18 21 24

Station 2 - Mold Dimensions

65


Top of Floor

73

Centreline

15' Gandelow Frames

At 1" = 4"NOTE: Rear side of



Sheer 50.13"

B2 - 46.00"

B1 - 41.13"

Gar 35.75"

Floor 31.38"


He

igh

t o

f T

op

of P

lan

ks a

bo

ve

To

p o

f F

loo

r a

t C

en

tre

line

Sh

ee

r 1

7.6

9"

Ga

r 5

.31"

B1

- 9

.38"

B2

- 1

3.5

6"

0 5 10 15 20 25 30 35 40 45 50 55 60cm

0 3 96 12Inches 15 18 21 24


57


68

Top of Floor

Centreline

15' Gandelow Frames

At 1" = 4"

NOTE: Rear side of



Sheer 54.13"

B2 - 49.00"

B1 - 43.63"

Gar 37.88"

Floor 33.25"


He

igh

t o

f T

op

of P

lan

ks a

bo

ve

To

p o

f F

loo

r a

t C

en

tre

line

Sh

ee

r 1

6.9

4"

Ga

r 4.9

4"

B1

- 8

.94"

B2

- 1

2.9

4"

0 5 10 15 20 25 30 35 40 45 50 55 60cm

0 3 96 12Inches 15 18 21 24


54


65

Top of Floor

Centreline

15' Gandelow Frames

At 1" = 4"

NOTE: Rear side of



Sheer 54.38"

B2 - 49.13"

B1 - 43.63"

Gar 37.63"

Floor 33.38"


He

igh

t o

f T

op

of P

lan

ks a

bo

ve

To

p o

f F

loo

r a

t C

en

tre

line

Sh

ee

r 1

6.5

6"

Ga

r 4

.75"

B1

- 8

.63

"

B2

- 1

2.6

3"

0 5 10 15 20 25 30 35 40 45 50 55 60cm

0 3 96 12Inches 15 18 21 24


54


Top of Floor

64

Centreline

15' Gandelow Frames

At 1" = 4"

NOTE: Rear side of



Sheer 52.13"

B2 - 47.06"

B1 - 41.50"

Gar 35.88"

Floor 32.38"


He

igh

t o

f T

op

of P

lan

ks a

bo

ve

To

p o

f F

loo

r a

t C

en

tre

line

Sh

ee

r 1

6.3

8"

Ga

r 4

.31"

B1

- 8

.31"

B2

- 1

2.3

8"

0 5 10 15 20 25 30 35 40 45 50 55 60cm

0 3 96 12Inches 15 18 21 24



Top of Floor 55

65

Centreline

15' Gandelow Frames

At 1" = 4"

NOTE: Rear side of



Sheer 48.00"

B2 - 43.00"

B1 - 37.44"

Gar 32.13"

Floor 29.25"


He

igh

t o

f T

op

of P

lan

ks a

bo

ve

To

p o

f F

loo

r a

t C

en

tre

line

Sh

ee

r 1

6.2

5"

Ga

r 4.2

5"

B1

- 8

.19"

B2

- 1

2.1

3"

0 5 10 15 20 25 30 35 40 45 50 55 60cm

0 3 96 12Inches 15 18 21 24


63


Top of Floor

67

Centreline

15' Gandelow Frames

At 1" = 4"

NOTE: Rear side of



Sheer 42.13"

B2 - 37.25"

B1 - 30.88"

Gar 24.88"

Floor 21.50"


He

igh

t o

f T

op

of P

lan

ks a

bo

ve

To

p o

f F

loo

r a

t C

en

tre

line

Sh

ee

r 1

6.2

5"

Ga

r 4.8

1"

B1

- 8

.50"

B2

- 1

2.0

0"

0 5 10 15 20 25 30 35 40 45 50 55 60cm

0 3 96 12Inches 15 18 21 24


68


Top of Floor

66

Centreline

15' Gandelow Frames

At 1" = 4"

NOTE: Rear side of



Sheer 35.25"

B2 - 29.75"

B1 - 21.75"

Gar 14.50"

Floor 10.00"


He

igh

t o

f T

op

of P

lan

ks a

bo

ve

To

p o

f F

loo

r a

t C

en

tre

line

Sh

ee

r 1

6.5

0"

Ga

r 6

.44"

B1

- 9

.56"

B2

- 1

2.2

5"

0 5 10 15 20 25 30 35 40 45 50 55 60cm

0 3 96 12Inches 15 18 21 24


69


Top of Floor

63

Centreline

15' Gandelow Frames

At 1" = 4"

NOTE: Rear side of


0 5 10 15 20 25 30 35 40 45 50 55 60cm

0 3 96 12Inches 15 18 21 24


Widths at Top of Planks (inner edge of plank)

Sheer 24.88"

B2 - 21.63"

B1 - 12.88"

He

igh

t o

f T

op

of P

lan

ks v

ert

ica

lly a

bo

ve

Ce

ntr

elin

e o

f D

AT

UM

lin

e

Sh

ee

r 2

2.6

3"

Ga

r 1

3.6

3"

(in

clu

din

g

the

go

rin

g)

B1

- 1

5.6

9"

B2

- 1

7.7

5

Transom

Centreline

Stern

Post

3.5" For details of transom

dimensions and bevel angles

see next page

DATUM line

15' Gandelow At 1" = 4"NOTE: The face shown is the

sloping front of the transom.

To

p o

f ste

rn p

ost 2

5.1

3"

15-foot Gandelow -

Templates for stem, stern and transom.

Gandelow Plans at 1" = 2"


Section through transom

Plank end

Plank end

0.44"

0.44"

Rabbet Line

Back Rabbet Line 13" glued

join

49°

4.19"

5.13"

2.88"

3.88"

51°

54°

135°

1.81"

2.13"

11.63"

26.5"

1.75"

1.25"

1.13"

1"

Remove after

assembling55°

1.63"

Stern post

sections

Stern Post

62°

1.5"

0.5"

1.63"

Stem post

half sections

Pla

nk e

nd

Pla

nk

end

Rope hole

Rabbet Line

Cut off w

ast

e a

fter

ass

em

bly

1.25"

Sheer

line

2.1

3"

4.1

3"

4.1

3" 4.1

3" 4

.31"

Cutwater

Apron (rear) of Stem Post

72.00" radius to front

of stem post

45/16 " (1

0.9

cm

)

1.75"

42°

4.0

0"

Back Rabbet Line (glued join)

1.44"

1.31"1.31"

0.44"

1.25"

0.5"

0.5"

1.63"

0.75"

+

1.63" radius Stem Post

36.00" radius to front

of Stem post

42°56°

Inches

cm

0 1 2 3 4 5 6 7 8 9 10 11 12

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Inch

es

cm

01

23

45

67

89

10

11

12

Centreline

1.25"

25.00" radius to

top curvesA'

A

Section

Section

Transom

Forward face

(port half)

Top edge of rear face

Top edge of front face

Standing bevel

Rear edge of u

ndercut rollin

g bevel

Fro

nt

Rear

Front face

Rear

Fro

nt fa

ce

Rear fa

ce

Fro

nt fa

ce

Re

ar

A to A' = 13.88"

A to B = 11.13"

A to C = 10.25"

A to D = 5.5"

A to E = 4.75"

1"

1"

B

C

ED

13

.75"

49°

64°

55°

135°

12.63"

10.81"

11.25"

12.44"

5.8

8"

5.7

5"

11.00"

10.88"S

ect

ion

Sectio

n

48º

01

23

45

67

89

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Fro

nt

Rear

Sectio

n

44º

See Step 4 in the

Gandelow-building book for

an explanation of how these

measurements are used

15-foot gandelow plans - information about the contents of … · these 'exploded' views...

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