#623, 20'  x 8'  Blunt Bow-  Construction Support Pram

Lineage:

This design kit is a modification of our similar 24 footer (#467).  It has been built in both console and tiller versions for a large scale infrastructure construction & engineering firm for use on their marine projects.   It's a relatively portable, support boat for marine services- essentially a rugged, self-propelled tool box, work platform and personnel shuttle.  The shape, with an easily twisting bottom and little curvature elsewhere, is quite easy to build.  

Particulars:

Length (hull):

  Beam (hull):

Wt. as rigged:

Wt. Bare Hull:

Deadrise Angles- 

  Transom:

        Forefoot:

24'

7' - 10" (w/o rub rails)

3,200# (90 hp outboard)

2,200# (w/ console) 

     

3

8

Scantlings:

Bottom:

Bot. Stringers:

Sides:

Side Stringers:

Decks:

Transverse Frames:

Transom:

Keelson:

.250"

3.5" x .250" & .190" Girders 

.190"

2.5" x .250"

.190"

.190" flanged

.250"    

4.5 x .375"