Ship Handling 1

 

SHIPHANDLING

• Science Skill OR

• Art Skill

 

 

Shiphandling –  Teamwork  T eamwork ? Appreciating required maneuver and relevant factors – Who should? Master Officers Engineers Helmsman Lookout Cre !ilot

" Har#our   master " Mooring cre

 

RESOURCES AT

$O CO%$&OL 1. WIND 2.CURRENT 3.SEA & SWELL 4.INTERACTION . MOMENTUM

HAND: HAND: 1.ENGINES 2.RUDDER 3.TRUSTERS !."N#$RS %.TUGS &.'$$RING (INES. ).HUMAN ELEMENTS

 

 

PIVOT POINT  • *$INT "R$UND +I# TE ,ESSE(  TURNS DURING " TURN -$R "N $SER,ER $N TE RIDGE. • I''EDI"TE "/IS $- TURN. • "S SI-TING N"TURE  DEPENDANT ON  '  '

(!EE)'ACCELE&A$*O%' )ECELE&A$ )ECEL E&A$*O%' *O%'MOME% MOME%$+M $+M ' WA$E& &E(*($A%CE'C, ' )&A-$ . $&*M ' (HALLOW WA$E& E$C.  

 

At centre of gravit/  

 

!ivot !oint is 0 L from forard

 

 

!ivot !oint is 0 L from stern

 

 

SLOW S!EED CONTROL "EE!IN# RUDDER E$$ECTI%ENESS $ULL RUDDER "IC" AHEAD STO!  RUDDER MIDSHI!.  SHORT SHOR T DURATION DURA TION O$ "IC" TO ACHIE%E SWIN#. "IC" AHEAD !OWER ' SH! ( DWT.  

 

6 KTS

3 KTS FINAL STOP

10 CABLES

 

 

3 KTS

1KTS FINAL STOP

10 CABLES

 

 

SH! TO DWT RATIO 120 dw

#argo hip

11 hp

230 dw #on. 30 hp &0 dw 4lk 1%0 hp 50 dw

Tanker

2%0 dw ,(##

 

20 hp

310 hp

 

TRANS%ERSE THRUST

•HEL*CAL )*(CHA&1E ' C&EA$E( LA&1E&

!&E((+&E O% !O&$ O- &+))E&2 •+!W +!WA A&) -LOW -& -&OM OM +%)E& $HE H+LL A))(

MO&E !&E((+&E $O $HE )OW% (WEE!*%1 !&O!ELLE& ,LA)E(2 •+%E3E% $+&,+LE%$ -LOW2

•COM!A&A$ COM!A&A$*3EL4 *3EL4 WEA5 -O&C -O&CE2 E2

 

 

 

 

G$ING "STERN •BOW TO STBD •SUBSTA SUBSTANTIAL NTIAL FORCE. •5 TO 10% OF APPLIED STERN POWER. •FOR EXAMPLE - 80,000 !" TANKER TANKER - #0,000 S$P - STERN POWER 10,000 S$P - 10% 0F  

10,000 S$P IS 1000 S$P --- ABT. 10T.

 

 TT 6 *I,$T *$INT E"D+"7

 

LA&1E $+&%*%1 LE3E& 

 

 TT 6 *I,$T *$INT STERN+"7

(MALL $+&%*%1  

LE3E& 

 

WED#E E$$ECT) A DE!ARTURE $ROM TRANS%ERSE THRUST E$$ECT

(W*%1( (W*% 1( $H $HE E W&O W&O%1 %1 WA4  

 

A%CHO&(  

 "N#$RS 6 #"(ES8 9UITE RE(I"(E.

  TE

+IND("SS IS N$T. N$T.

 1:

IN#RE"SE IN T$NN"GE IS '"T#ED 7 2%: IN#RE"SE IN "N#$R GE"R $R *$+ER.

 !OWER

TO LI$T ANCHOR & 4 SHAC"LES WHILE DEADSTO! IN WATER.

 '"IN(7

R";E $R GE"R -"I(URE SEEN $N SI*S '$RE T"N %0  

 

D+T.

A%CHO& )&E)1*%1  AMOUNT OF CABLE NOT TO EXCEED 1 1# TIMES T$E DEPT$.

DESI&N SPEED OF WINDLASS SPEED IS 30 '"  M(). . 30 '"  M(). * 3 MINUTES A S$ACKLE * 0.3 KTS ON &ROUND. STAT STATIC $OLDIN& POWER IS T$REE TIMES STA

$I&$ER T$AN D+NAMIC POWER.

 

 

•,E$$E& CO%$&OL CO%$ &OL O- (!EE)2 •*M!&O3E) ($EE&A1E2 •M*%*M+M LA$E&AL &E(*($A%CE2 •,E$$E& CO%$&OL. •BEST TO TURN S$ORT-ROUND.

   

   

LATERAL LAT ERAL FORCES WHEN TURNING

6

   

TURNIN# RUDDER $ORCE  LATERAL RESISTANCE  !I%OT !OINT

• INERTI" • 1