Ülesanne exercise

Cb Cp Cm Cw
1 1.00 1.00 1.00 1.00
2 0.50 1.00 0.50 1.00
3 0.50 0.50 1.00 0.50
4 0.78 1.00 pii/4 1.00
5 0.50 0.50 1.00 1.00
6 0.66 0.67 1.00 0.67
7 cp*cm 0,66 pii/4 0.66
max area*L
4. joonise Cb =pii/4
Problem nr. 1
Lwl 9.30 m
V 6.70 kn = 3.45 m/s
Fn 0.36

Problem nr. 2
Lwl 180.00 m
V 25.00 kn = 12.65 m/s
Fn 0.30

Problem nr. 3
Lwl 6.40 m
t 5.00 h = 305.00 min = 18300.00 s
5.00 min
s 58.00 km = 58000.00 m
v 3.17 m/s
Fn 0.40

Problem nr 4
Fastest 0.40 Fastest relative speed- Wooden boat
Problem nr. 1
Fn 0.36
∆ 5.00 t
▽ 5.00 m^3
P 14.93 kw

Problem nr. 2
∆ 18000.00 t
▽ 18000.00 m^3
Lwl 180.00 m
V 25.00 kn = 12.65 m/s
Fn 0.30
P 31430 kw = 31.43 mw

Problem nr. 3
∆ 120.00 kg = 0.12 t
Fn 0.40
P 0.49 kw = 491.52 w
Problem nr. 1
m(hull) 120.00 kg = 0.12 t
m(total) 0.51 t
Fn 0.45
P 2.97 kw

Problem nr. 2
Lwl 12.00 m
m 9850.00 kg 9.85 t
Fn 0.45
P 57.45 kw
V 4.88 m/s 9.64 kn
Ñ 35.00 t = 35.00 m^3
Lwl 24.70 m
V 23.50 kn = 11.89 m/s
P 1140.00 hp = 850.44 kw
Fn 0.76
P 998.58 kw
Dif 14.83%
kw per ton 24.30 Quite fast because of Fn=0,76 and enough powe because power requirements are 10˂Kw/t˂30
ents are 10˂Kw/t˂30
Problem 1
Lwl 5.00 m
m 1100.00 kg = 1.10 t
Ñ 1.10 t
Fn 2.50
v 17.51 m
P(Barnaby/Levi) 90.99 kw
P(Crouch) 92.89 kw
Problem 2
Lwl 8.00 m
LCG 3.04 m
Br 1.80 m
V 19.98 m/s = 39.49 kn
Problem nr. 1
VMV 11
V 23.00 kn = 11.64 m/s
Smuggler boat
LH 8.00 m
m 1900.00 kg = 1.90 t
∇ 1.90
V(smuggler)˃V(VMV 11) 24.00 kn = 12.14
Fn 1.37

Problem nr. 2
Smugglers 3.00
m(smuggler) 85.00 kg
m(cargo) 1000.00 l
m(t) 3155.00 kg = 3.16 t
P 520.18 kw

VMV 11 was equipped with 2 Maybach V-12, 1220 hp (910kw) diesel engines.
I tried to find information about that from internet. I came to the conclusion that there wasn’t that kind of engine available fo
at kind of engine available for 8 m boat. 520 kw engines were too big for 8m long boats.
Paberil ül 7 Ül 8

Hull length LH 10.00 m Lwl 15 m

Length waterline LWL 9.46 m Bwl 4m
Hull draft Tc 0.50 m Tc 1.3 m
Hull depth D 1.60 m ∇ 33 m^3
Hull beam BH 3.40 m Cw 0.8 Planing hull approximately 0.8
Waterline beam BWL 2.68 m Aw 48 m^2
Displacement ∇ 5.32 m^3 Load 3 m^3
Block coefficient Cb 0.42 Immersion 0.0625 m
Süvis Tc 1.80 m
 Aw
Cw 
LWL 
Ax
Ül 9
Cm 
BWL  Tc
Cp 0.55
Cb 0.41
Cwl 0.70
∇ 5.20 m^3
Ax 1.00 m^2
ull approximately 0.8 Aw 17.75 m^2 Note :
Cm 0.75
LCB 5.10 m Cb  C m  C p
LCB 53.9%
LCB% -3.9%
 Aw
Cw 
LWL  BWL
Ax
Cm 
BWL  Tc

Note :
Cb  C m  C p
 Table from exercise 7
LH 10.00 m
Exercise 10 LWL 9.46 m
LTR 5.26 Tc 0.50 m
LBR 3.53 D 1.60 m
LTRc 18.92 BH 3.40 m
BTR 5.36 BWL 2.68 m
LDR 5.42 Racer/cruiser ∇ 5.32 m^3
DLR-BR 177.96 Cb 0.42
BR 0.48
DLR 178.43 Lightboat
Q 1.98 t
Mlcc 4.16 t

Reference sail boats from https://sailboatdata.com/

Sail boats LH (m) Lwl (m) ∇ (m^3) BH (m) T (m) LBR LTR
Our sail boat 10.00 9.46 5.32 3.40 0.50 2.94 18.92
JEANNEAU 3200 10.08 9.78 3.40 3.48 1.88 2.90 5.20
JEANNEAU 319 9.98 9.44 5.10 3.45 1.85 2.89 5.10
HANSE 348 10.40 9.55 6.30 3.55 1.95 2.93 4.90
OFCET 32 9.80 9.18 3.40 3.36 1.90 2.92 4.83
ELAN E4 10.60 10.10 5.13 3.50 2.15 3.03 4.70
MARLOW-HUNTER 31 9.86 9.04 5.38 3.61 1.65 2.73 5.48
XC 35 10.36 9.60 6.45 3.52 1.90 2.94 5.05
OCEANIS 35 (BENETEAU) 9.99 9.70 5.53 3.70 1.85 2.70 5.24

Reference motor boats from https://www.boatguide.com/specs/

Motor boats Loa (m) Lwl (m) ∇ (m^3) BH (m) T (m) LBR LTR
Pursuit OS 325 10.52 9.47 5.64 3.30 0.81 3.19 11.65
FLYER 32 10.61 9.55 5.24 3.32 1.30 3.20 7.35
Regal Express Cruiser 33 10.50 9.45 5.74 3.17 0.90 3.31 10.50
Regal SAV 33 10.30 9.27 5.33 3.20 0.89 3.22 10.42
Regal XO 33 10.30 9.27 5.22 3.20 0.89 3.22 10.42
Crownline SCR 325 9.90 8.91 4.67 3.00 1.02 3.30 8.74
Sea Ray Sundancer 320 9.80 8.82 6.04 3.00 1.09 3.27 8.09
Sea Ray Sundancer 350 10.70 9.63 7.16 3.45 1.02 3.10 9.44
Chaparral Signature 330 10.20 9.18 5.85 3.20 1.04 3.19 8.83
I didn´t find enough information about Lwl for motor boats, usually there was given only Loa, but Lwl is apporximately 0.9*Loa
BTR LDR DLR SlendernessDisplacement length ratio
6.8 5.42 178.43 Light boat Light boat
1.851064 6.50 103.12 Light boat Light boat
1.864865 5.48 172.01 Light boat Light boat
1.820513 5.17 205.22 Average Average
1.768421 6.10 124.70 Light boat Light boat
1.627907 5.86 141.27 Light boat Light boat
2.187879 5.16 206.62 Average Average
1.852632 5.16 206.85 Average Average
2 5.49 171.91 Light boat Light boat

BTR LDR DLR SlendernessDisplacement length ratio

4.059041 5.32 188.54 Light boat Light boat
2.553846 5.50 170.75 Light boat Light boat
3.522222 5.28 192.91 Light boat Light boat
3.595506 5.31 189.84 Light boat Light boat
3.595506 5.35 185.78 Light boat Light boat
2.941176 5.33 187.40 Light boat Light boat
2.752294 4.84 249.56 Average Average
3.382353 5.00 227.41 Average Average
3.076923 5.09 214.59 Average Average
ut Lwl is apporximately 0.9*Loa
 Ʃm LCG TCG VCG Ʃmx Ʃmy Ʃmz
SUM 5580.00 30.18 -0.20 10.93 28204.00 -600.00 32790.00
Part m x y z mx my mz
Hull 3000.00 5.20 0.00 0.93 15600.00 0.00 2790.00
Keel 1980.00 4.90 0.00 0.85 9702.00 0.00 2550.00
Mast 150.00 3.98 0.00 8.10 597.00 0.00 24300.00
Engine 170.00 6.50 0.00 0.40 1105.00 0.00 1200.00
Batteries 80.00 6.00 -0.60 0.30 480.00 -1800.00 900.00
Water tank 200.00 3.60 0.40 0.35 720.00 1200.00 1050.00
 Tc 0.5 m
Lwl 9.44 m ∇ 5.324088 m^3
Bwl 2.68 m Aw 17.75 m^2
Cw 0.71 ∇ 5.20 m^3
K 0.50
I 7.57 m^4
BM 1.42 m
GM 1.12 m
KB 0.32 m
KM 1.74 m
KG 0.62 m
RM1 995.48 Nm
RM30 24698.81 Nm

etteantud
Tc 0,52 m
Small angle heel
L 20.00 m
B 2.00 m
D 0.60 m
Tc 0.40 m
▽ 16.00 m^3
I 13.33 m^4
BM 0.83 m
KB 0.20 m
KG 0.30 m
GM 0.73 m
sin ɸ 0.20
m 16000.00 kg
M 22457.84 Nm
Mp 833.85 Nm Moment of 1 person
Persons 27.00
BAS 1,5 m
J 3.78 m
I 11.33 m
E 4.72 m
P 13.22 m
Asf 21.39 m^2
Asm 31.19 m^2
As 52.58 m^2
FF 1.30 m
FM 1.10 m
Bas 1.50 m
CEm 6.96 m
CEf 5.04 m
HCE 6.18 m
HLP Err:501 m
HA 6.88 m
DA 17.00 °

J+E 90% of LWL

DA 17.00 °
As 52.58 m^2
∇ Err:501 m^2
SDR 17.24
Sk 2.63 m^2
Sr 1.05 m^2
Sw 19.87 m^2
SWR 2.23

2.0˂SWR˂2.5 Normal speed

14˂SDR˂20 Cruiser
Lwl = 9.4 m, then DA should be 14°˂Da˂19.5°
DA is 17°, then our sail boat is not too tender or stiff

SWR is 2.23 and SDR is 17.24, which means it is normal speed cruising sailboat. Dellenbaugh angle for 9.5 meters waterline
or 9.5 meters waterline length should be between 14-20 degrees, our sailboat has 17 degrees, so it is not too tender or stiff.
too tender or stiff.
SDR 17.24
SWR 2.23
MR 7.59

I took the specifications from https://sailboatdata.com/

Calculations
Lwl(m) Tc(m) As(m^2) ∇ (m^3) k Sw (m^2) Sk (m^2) Sr (m^2)
Our sail boat 9.46 0.50 52.58 Err:501 1.00 19.87 2.63 1.05
JEANNEAU 3200 9.78 1.88 49.13 3.40 1.00 16.15 2.46 0.98
JEANNEAU 319 9.44 1.85 40.65 5.10 1.00 19.43 2.03 0.81
HANSE 348 9.55 1.95 55.21 6.30 1.00 21.72 2.76 1.10
OFCET 32 9.18 1.90 57.97 3.40 1.00 15.64 2.90 1.16
ELAN E4 10.10 2.15 64.57 5.13 1.00 20.15 3.23 1.29
MARLOW-HUNTER 31 9.04 1.65 53.98 5.38 1.00 19.52 2.70 1.08
XC 35 9.60 1.90 65.22 6.45 1.00 22.03 3.26 1.30
OCEANIS 35 (BENETEAU) 9.70 1.85 50.54 5.53 1.00 20.51 2.53 1.01

a) Boat performance in light wind

Lwl(m) Tc(m) As(m^2) ∇ (m^3) k Sw (m^2) Sk (m^2) Sr (m^2)
OFCET 32 9.18 1.90 57.97 3.40 1.00 15.64 2.90 1.16
ELAN E4 10.10 2.15 64.57 5.13 1.00 20.15 3.23 1.29
JEANNEAU 3200 9.78 1.88 49.13 3.40 1.00 16.15 2.46 0.98
XC 35 9.60 1.90 65.22 6.45 1.00 22.03 3.26 1.30
MARLOW-HUNTER 31 9.04 1.65 53.98 5.38 1.00 19.52 2.70 1.08
Our sailboat 9.46 0.50 52.58 Err:501 1.00 19.87 2.63 1.05
HANSE 348 9.55 1.95 55.21 6.30 1.00 21.72 2.76 1.10
OCEANIS 35 (BENETEAU) 9.70 1.85 50.54 5.53 1.00 20.51 2.53 1.01
JEANNEAU 319 9.44 1.85 40.65 5.10 1.00 19.43 2.03 0.81

b) Boat performance in fresh breeze

Lwl(m) Tc(m) As(m^2) ∇ (m^3) k Sw (m^2) Sk (m^2) Sr (m^2)
OFCET 32 9.18 1.90 57.97 3.40 1.00 15.64 2.90 1.16
JEANNEAU 3200 9.78 1.88 49.13 3.40 1.00 16.15 2.46 0.98
ELAN E4 10.10 2.15 64.57 5.13 1.00 20.15 3.23 1.29
Our sailboat 9.46 0.50 57.97 Err:501 1.00 19.87 2.63 1.05
XC 35 9.60 1.90 65.22 6.45 1.00 22.03 3.26 1.30
MARLOW-HUNTER 31 9.04 1.65 53.98 5.38 1.00 19.52 2.70 1.08
HANSE 348 9.55 1.95 55.21 6.30 1.00 21.72 2.76 1.10
OCEANIS 35 (BENETEAU) 9.70 1.85 50.54 5.53 1.00 20.51 2.53 1.01
JEANNEAU 319 9.44 1.85 40.65 5.10 1.00 19.43 2.03 0.81

Fastest boat in average is OFCET 32

Slowest boat in average is JEANNEAU 319
SDR SWR MR
17.24 2.23 7.59
21.73 2.51 8.43
13.72 1.83 7.03
16.19 2.16 7.43
25.64 2.94 8.64
21.71 2.62 8.47
17.59 2.32 7.46
18.82 2.45 7.83
16.16 2.10 7.51

SDR SWR MR
25.64 2.94 8.64
21.71 2.62 8.47
21.73 2.51 8.43
18.82 2.45 7.83
17.59 2.32 7.46
17.24 2.23 7.59
16.19 2.16 7.43
16.16 2.10 7.51
13.72 1.83 7.03

SDR SWR MR
25.64 2.94 8.64
21.73 2.51 8.43
21.71 2.62 8.47
19.01 2.46 7.84
18.82 2.45 7.83
17.59 2.32 7.46
16.19 2.16 7.43
16.16 2.10 7.51
13.72 1.83 7.03
One-off boat costs
Cost of material and installed parts 7.58 Eur/kg
Total cost of material and installed parts Err:501 Eur including taxes
Building speed 1.08 kg/h
Man hours Err:501 h
labour cost per hour(found from internet forums) 20.00 Eur/h including taxes
Total labour costs 98273.44 Eur
Production cost 147135.04 Eur
Design cost 11035.128 Eur 7.5% of production cost
Total building cost 158170.17 Eur
Total selling price=Total building cost + tax 20% 189804.03

Small production
Building speed 2.00 Kg/h
Man hours Err:501 h
Total labour cost 53240.88 Eur
Total building cost 102102.48 Eur excludes design cost
Total selling price 122522.98

Mass production
Building speed 6 kg/h
Man hours Err:501 h
Total labour cost 17746.96 Eur
Total building cost 66608.562 Eur excludes design cost
Total selling price 79930.274
 Boat market

Name Type ID LH(m) Total price

My one-off Sailboat - 10.00 189,804 €
My small production Sailboat - 10.00 122,523 €
My mass production Sailboat - 10.00 79,930 €
Beneteau Oceanis 30.1 Sailboat 751009 9.53 86,800 €
Jeanneau 319 Sun Odyssey Sailboat  768615 9.99 115,200 €
Cruiser 33 Sailboat - 9.99 94,990 €
BENETEAU OCEANIS 30.1 Sailboat - 9.53 109,000 €
JEANNEAU SUN ODYSSEY 349 Sailboat - 9.97 145,000 €
HANSE 315 Sailboat - 9.62 99,500 €
JEANNEAU SUN ODYSSEY 319 Sailboat - 9.80 139,000 €
JEANNEAU SUN ODYSSEY 349  Sailboat - 9.97 157,000 €
SAFFIER SC 10M Sailboat - 10.00 109,500 €
SAFFIER SE 33 UD Sailboat - 10.00 114,500 €
BENETEAU OCEANIS 35.1 Sailboat 10.44 163,750 €

including taxes

Price comparison
200,000 €
180,000 €
160,000 €

including taxes 140,000 €

120,000 €
100,000 €
80,000 €
60,000 €
40,000 €
20,000 €
0€
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UkKfOBcVkFdbF0clVPrlMTLv3wY1cxRJYvgshoCKrAQAvD_BwE
Solution Fn 0.35
V 3.37 m/s
Hull v 0.000001 m^2/s
Rn 22327355.77 Lwl 9.46 m
L 6.62 m p 1025 kg/m^3
Cf 0.0026 Sw 19.87 m^2
Rf 303.48 N

Keel
L 1.14 m
Rn 3843730.83
Cf 0.0036
Rf 54.65 N

Rudder
L 0.55 m
Rn 1854431.54
Cf 0.0041
Rf 25.22 N

Total Cf 383.35 N