Main Dimensions; Propeller Clearance - Man B&W S50MC-C8-TII Project Manual

MAN B&W

Main Dimensions

Length between perpendiculars
Length of load water line
Breadth
Draft at forward perpendicular
Draft at aft perpendicular
Displacement
Block coefficient (LPP)
Midship coefficient
Waterplane area coefficient
Wetted surface with appendages
Centre of buoyancy forward of LPP/2
Propeller centre height above baseline
Bulb section area at forward perpendicular
Table 5.18.03: Data sheet for propeller design purposes, in case model test is not available this table should be filled in

Propeller clearance

To reduce pressure impulses and vibrations emit-
ted from the propeller to the hull, MAN Diesel
recommend a minimum tip clearance as shown in
Fig. 5.18.04.
For ships with slender aft body and favourable
inflow conditions the lower values can be used,
whereas full afterbody and large variations in
wake field cause the upper values to be used.
In twinscrew ships the blade tip may protrude
below the base line.
Fig. 5.18.04: Propeller clearance
MAN B&W S70MC, S70MC-C/ME-C/ME-GI, L70MC-C/ME-C,
S60MC, S60MC-C/ME-C/ME-GI/ME-B, L60MC-C/ME-C,
S50MC, S50MC-C/ME-C/ME-B, S46MC-C/ME-B, S42MC,
S40MC-C/ME-B, S35MC, S35MC-C/ME-B, L35MC, S26MC
Symbol Unit
LPP
LWL
B
TF
TA
o
CB
CM
CWL
S
LCB
H
AB
Dismant-
Hub
VBS 1280
VBS 1380
VBS 1460
VBS 1560
VBS 1680
VBS 1800
VBS 1940
VBS 2080
VBS 2240
MAN Diesel
Ballast
m
m
m
m
m
m3



m2
m
m
m2
X
High skew Nonskew
ling
propeller propeller
of cap
Y mm Y mm
X mm
390
420
450
480
1520% 2025%
515
of D of D
555
590
635
680
5.18
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Loaded
178 22 970.0
Baseline
178 22 372.0
Baseline
clearance
Z mm
Min.
50100
178 48 589.0
198 46 953.5