Order Form Photos Keel Hull Construction Deck Hardware Rigging Sail Plan List of Plans Dimensions Layout Description

MULTICHINE 41 SK
Hull, Deck and Interior Construction

Material: steel 1020
(or equivalent)		 Thickness Width

Length

Plane
Area

Vol.

Weigth

(mm)
(mm)
(m)
(m2)
(m3)
(kg)
Plating

1.1.1 Hull plating - topsides 3.18 mm (1/8") plate 3.18 25 0.0795 624
1.1.2 Hull plating - bilge 4.76 mm (3/16") plate 4.76 32 0.1523 1196
1.2 Keel 6.35 mm (1/4") plate 6.35 9 0.0572 449
1.3 Deck 3.18 mm (1/8") plate 3.175 44 0.1399 1082
1.4 Transverse bulkheads 3.18 mm (1/8") plate 3.175 17 0.0541 412
1.5 Longitudinal bulkheads 12.7 mm (1/2") plate 12.7 3 0.0381 28
1.6 Stem 6.35 mm (1/4") plate 6.35 0.12 0.008 6
1.7 Cabin sides

4.76 mm (3/16") plate 4.76 . 2.5 0.0119 93
1.8 Frame joining floors 6.35 mm (1/4") plate 6.35 75 3.18 1.33 0.0085 66
1.9 Mast support structure 12.7 mm (1/2") plate
Thickness Width Length Sec.
Area		 Vol. Weigth
(mm) (mm) (m) (mm2) (m3) (kg)
2 Scantlings
2.1 Frames 1/4" flat bar 6.35 50 111 0.035 276
2.2 Floors 50 x 100 U bar 12.7 6.3 2540 125
2.3 Engine bed 1/2" L bar 12.7
2.4 Chines 5/8" round bar 96.7 198 0.019 150
2.5 Beams 1/4" flat bar 6.35 50 73 0.023 181
2.6 Sheer Tube: diam.: 40 mm,
thickness: 1/8"		 23.72 193 0.0046 36
2.7 Deck stringers 1/8" flat bar 3.175 25 54 0.0043 34
2.8 Deck round bars 5/8" round bar 40 198 0.0079 62
2.9 Deck hardware reinforcement 1/2" plate where hardware will be fixed. Make a thread in this plate.
2.10 Main hatch track 3/16" L bar 4.76 165 3.32 0.0026 20
2.11 Post to support the mast Tube: diam.: 4"
thickness: 3/16"		 2.16 1448 0.0031 25
2.12 Bulkhead stiffeners 3/16" flat  plate 4.76 30 44 0.0063 50
2.13 Mast step structure 60 x 130 "U" bar 12.7 0.729 2819 0.0021 16
3 Tanks (m2)
3.1 Cover lid 3.18 mm (1/8") plate 3.175 4.16 0.0132 104
3.2 Sides 6.35 mm (1/4") plate 6.35 1.572 0.010 78
3.4 Baffle 3.18 mm (1/8") plate 3.175 0.85 0.0027 21
Roberto Barros Yacht Design