Ship Handling 3

7/21/2019 Ship Handling 3

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ADAPTED FROM:

Naval Shiphandling


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Naval Shiphandling

AGENDA: Describe the effects of oent! and inertia"

Disc!ss #controllable$ shiphandling forces"

Disc!ss #!ncontrollable$ forces"

Disc!ss #sei%controllable$ forces""

Describe the press!re&s!ction effect on ship's

ane!verabilit( d!ring alongside operations andoperating in shallo) )ater"

Applicable reading: *OG +,%--."


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There a( be ore than a do/en forces acting

abo!t the vessel's a0is at a given oent1 and

the res!ltant a( not be as anticipated b!t d!epartiall( to a force )hich has escaped discover("

This is not 2(sticis' as !ch as lac3 of the

research )hich ta3es the art of shiphandling

into the finite )orld of applied science" P"F" *455ERTON1 6AS47 S84P8AND54NG

Shiphandling Theor(


4/25

MOMENT9M

4NERT4A

MOMENT9M: #Generall(1 )e consider oent!as the otion of a ship at the tie )e no longer )antit1 especiall( )hen )e have ta3en action to obtain the

opposite effect" """ Moent! is the ;!alit( ofotion eas!red b( the prod!ct of ass velocit("$

4NERT4A: 4nertia is the ;!alit( of otion thatca!ses a ship to resist a change in otion" #A forcee0erted on a ship )ill res!lt in otion after inertiahas been overcoe"$ 8oo(er % 6ehaviorand 8andling of Ships


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Ship


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P4=OT PO4NT

8EAD *A>1 STEAD>

7O9RSE SPEED

A8EAD 6E55 FROM D4*"""5ONG STEER4NG 5E=ER

FROM PROPS&R9DDERS

ASTERN 6E55 FROM D4*"""

NO EFFE7T4=E STEER4NG

5E=ER 9NT45 SOME

STERN *A>


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Advance for 90

Final

Diameter

Tactical

Diameter

Transfer


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P4=OT PO4NT

PIER PIER PIER

D4* % 6OT8

T9GS

E?9A5

5E=ERAGE

S5O* 8EAD

*A>% AFT T9G8AS MORE

5E=ERAGE

S5O* STERN

*A> % F*D

T9G 8AS

MORE5E=ERAGE


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S84P8AND54NG PR4N74P5ES

CONTROL vs. FAITH

7ONTRO5: Precise and constant abilit( to

ad@!st to changing circ!stances"

FA4T8: >ielding control to nat!ral forces


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Three 6asic

7ategories Of Forces7ontrollable Forces

Sei%controllable Forces

9ncontrollable Forces


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S84P8AND54NG FOR7ES7ONTRO55A65E

ENG4NES&PROPE55ERsB

R9DDER

6O* T8R9STER & AP9s

T9GS

AN78ORS 54NES


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PROPE55ER FOR7ES

STERN *A5CS T8E SAME

D4RE7T4ON PROPE55ER T9RNS

5ONG4T9D4NA5

T8R9ST

TRANS=ERSE

T8R9STS4DE FOR7E OR

PADD5E*8EE5

FOR7EB

7O9P5E

T*4STB


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Visualize

the lower blades walking along the bottom.

Side Force

S4NG5E PROPE55ERSTERN *A5C


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7ONTRO55A65E

P4T78 PROPE55ERS

STERN *A5CS

TO ST6D

FFGDD&7G&M7M

DD&7G DE=E5OP

STERN *A> P4T78 AND *8EN

T*4ST4NGDDG -


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R9DDER

EFFE7T4=ENESS

R9DDER P5A7EMENT

7OORD4NAT4NG R9DDER

ENG4NES

4MP547AT4ONS OF A55 STOP

P9MP TO T8E R9DDER C47C A8EADB


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DDG%- R9DDER

P5A7EMENT


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6O* T8R9STERS &

AP9s

HI ,

6O* T8R9STER AP9

T*O 9N4TS

EA78 JK DEG4NDEPENDENT

ON % OFF ON5>

FFG5ST&58A&ARS&M7M


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T!gboats

Cruiser

Tugoat

Assist maneuvering !

"ushing or "ulling

TO 6E D4S79SSED

NELT 5E7T9RE


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S84P8AND54NG FOR7ES

SEM4%7ONTRO55A65E

S8A55O* *ATER EFFE7TSS?9AT

PASS4NG S84P EFFE7TSMEET4NG

O=ERTAC4NG&9NREPS


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H" L DRAFT

S5O* DO*N TO RED97E EFFE7TS

S8A55O* *ATER EFFE7TS

S?9AT


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S84P8AND54NG FOR7ES9N7ONTRO55A65E

*4ND

79RRENT


22/25

6alance of Forces

Rudder$%& '

(ind

$%& )TS'

Current$% )TS'

Pro"eller

$*+ )TS'


23/25

Mooring to a Pier

1. No set on or off the pier.a. pproa!h at 1" to #" degrees$ bare

steeragewa%.

b. &top engines and drift !loser.!. Put rudder o'er awa% from the pier.

d. (a!k down as needed to stop forward

motion.


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Mooring to a Pier

#. (eing set on the pier.a. (ring the ship to a stop parallel to the

pier$ half a beam)s width awa%.

b. *et !urrent or wind push the ship in.!. +se engines to !ontrol position along

the pier.

,ind -urrent


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Mooring to a Pier

/. (eing set off the pier.a. pproa!h at faster speed.

b. Put o'er lines as soon as possible$ put

rudder o'er awa% from pier to bring inthe stern.

!. &top headwa% b% ba!king outboard

engine.

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Ship Handling 3