Table 4.1
Factors (K) for Converting Various Boat Materials from Dry to Submerged Weight

Material
Specific Gravity
Factor (K)
Pounds/
Cubic Foot
Lead
11.38
0.91
710
Copper
8.91
0.89
556
Monel Metal
8.91
0.89
556
Bronze
8.88
0.89
554
Nickel
8.61
0.88
537
Brass
8.56
0.88
534
Stainless Steel
8.00
0.88
500
Steel
7.85
0.88
490
Cast Iron
7.08
0.86
442
Zinc-Cast Alloy
6.63
0.85
414
Aluminum
2.73
0.63
170
Glass
2.60
0.62
162
Ferro-Cement
2.40
0.58
150
Rubber
1.51
0.34
94
Fiberglass (Laminate)
1.50
0.33
94
Kevlar
1.30
0.24
81
Plexiglass-Lucite
1.20
0.17
75
Linoleum*
1.17
0.15
72
A.B.S.
1.12
0.11
70
Teak
0.99
-0.01
62
Oak-White
0.85
-0.18
53
Oil-Diesel
0.85
-0.18
53
Gasoline
0.73
-0.37
45
Oak
0.63
-0.56
39
Blandex
0.58
-0.70
36
Mahogany - Philippine
0.58
-0.72
36
Mahogany - Honduras
0.56
-0.78
35
Ash
0.56
-0.78
35
Yellow Pine
0.55
-0.81
34
Fir Plywood
0.55
-0.81
34
Mahogany Plywood
0.54
-0.83
34
Royalex
0.50
-0.95
31
Mahogany - African
0.51
-0.96
32
Fir
0.51
-0.96
32
Cedar - Port Orford
0.48
-1.08
30
Pine - White
0.42
-1.38
26
Cedar - White
0.33
-1.95
21
Cork
0.24
-3.17
15
Balsa - End Grain
0.16
-5.24
10