Dinghbat
designed by Steven Lewis

DinghBat is an 8 foot heavy displacement Pram dinghy designed for use as a tender or small pleasure craft. It has a dart cut into the front of the bottom panel and has a vee in the front, blending into a flat bottom aft. The bottom panels can also be done in 2 pieces.  The 2 water lines are at 300 and 500lbs displacement. With a boat weight in the 50lb range this leaves a lot of carrying capacity. The boat could also be set up for sail. For rowing, I would recommend a skeg be attached to the bottom. Using a beefy rear transom, you could use a small motor also.

Bottom Panel Half

Station

X

Y

X2

Y2

1

0

0

0     

18     

2

12

0

12     

19  7/16

3

24

0

24     

20  5/8

4

36

0

36     

20 15/16

5

48

0

48     

21     

6

60

0

60     

20  1/16

7

72

 0

72     

17  7/8

8

84

3/16

84     

14  3/4

9

90  1/4

3/8

N/A

N/A

10

N/A

N/A

92  1/2

12  1/16

 

Side Panel First Chine

Station

X

Y

X2

Y2

1

N/A

N/A

0      

16  7/16

2

1  1/8

5  5/16

N/A

N/A

3

12     

3  1/8

12     

15  7/8

4

24     

1  1/2

24     

15  3/8

5

36     

  9/16

36     

15     

6

48     

  1/16

48     

14  5/8

7

60     

  1/16

60     

14  5/16

8

72     

1     

72     

14  3/16

9

84     

2 15/16

84     

14  1/4

10

94     

5  5/16

N/A

N/A

11

N/A

N/A

96     

14  3/8

 

Rear Transom Half

 

 

Station

X

Y

 

 

1

0     

0     

 

 

2

0     

18     

 

 

3

10  3/4

21  1/8

 

 

4

 

 

 

 

 

 

 

 

 

Front Transom Half

 

 

Station

X

Y

 

 

1

0     

0     

 

 

2

3  7/16

11  3/8

 

 

3

14  1/16

11  7/8

 

 

4

 

 

 

 

All measurements are in inches. The end points of the plotted lines are joined by a straight line.

This shows how the measurements are used to lay out the panels. X and Y are the bottom line of the panel and X2 and Y2 are the top line. All points are from the edge of the ply or a baseline. Any points which are N/A are not plotted. They may just be not on the panel or are not important to that line. The two end points are closed with a straight line.

For information on Stitch and Glue, please check the construction of fisher10. The hull was done entirely with stitch and glue, except for the transom/side panel joint, which was first attached with screws and then filleted on the inside and taped on the outside. There are also many good sites with Stitch and glue information. www.bateau.com has an excellent primer on the subject, so do most of the other major plans dealers, such as Glenn-L and Clark Craft.