seamanship ch. 5

8/18/2019 Seamanship Ch. 5

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SEAMANSHIP CH. 5

BOAT HANDLING

REFERENCES: Chapman’s and AUX s!d" #!$d%


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RESPONDING TO THE LA&S OFPH'SICS

(. D$s)*+%,$n# h% ,%-a$*nsh$p %/%%n h% -a/s *0

ph"s$)s and *a %ha+$*, )an % p%,p-%1$n#.

2. N* /* *as ,%sp*nd h% sam% %+%n !nd%,

$d%n$)a- )$,)!msan)%s.

3. S!))%ss0!- *a hand-$n# ,%4!$,%s PRACTICE

PRACTICE and MORE PRACTICE.


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ABILIT' TO STEER &ELL6HELMSMANSHIP7

(. Cann* % mas%,%d 0,*m a **8 *, $n a )-ass,**m.

2. In+*-+%s "*!, 6,%a)$*n 9 ,%sp*ns%7 * h% %n$,% *a

and $’s *a- %n+$,*nm%n $n)-!d$n# h% /%ah%,.

3. '*! m!s aa$n h% as$)s *0 6p%,0*,man)%7 0,*m6hands *n7 %1p%,$%n)% $n *,d%, * 0!--" !nd%,sand and

mas%, h% 6h%-m7.


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SECRET OF GOODHELMSMANSHIP

(. NO& 'OUR BOAT

2. Ta8% $ %as" *n an*h%,’s *a !n$- "*!

6#% h% 0%%-7 and NO& THEIR BOAT

3. P,a)$)% p,a)$)% and p,a)$)% s*m% m*,%.


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BASIC TERMINOLOG'INBOARD OUTBOARD I;O THRUST PROPELLER

(. INBOARD: En#$n% m*!n%d /$h$n h% h!--

2. OUTBOARD: En#$n% m*!n%d *n h% ,ans*m and d%a)ha-%.

3. I;O: C*m$na$*n *0 $ns$d% and *!s$d%.


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TERMINOLOG' C*n’dSINGLE;T&IN SCRE& AUXILIAR' INBOARD OUTBOARD

(. SINGLE SCRE&: B*a /$h *n% p,*p%--%,

2. T&IN SCRE&: B*a /$h /* p,*p%--%,s.

3. AUXILIAR': Sa$-*a 0$%d /$h an %n#$n%


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TERMINOLOG' C*n’dSTEERING THRUST RUDDER PORT STARBOARD

(. STEERING: A))*mp-$sh%d " CHANGING d$,%)$*n *0 h,!s.2. CHANGING THRUST DIRECTION:

A. B" ,!dd%, a)$*n

B" )han#$n# %n#$n% d$,%)$*n *0 *!*a,d *, I;O -*/%, !n$.

REMEMBER: PORT and STARBOARD s$d%s a,% 0$1%d n*

ma%, /h$)h h%ad$n# "*! ha+%.


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TERMINOLOG' C*n’dHEAD&A'= STERN&A'= TURNING=RIGHT;LEFT RUDDER

(. MAING HEAD&A': G*$n# 0*,/a,d $n h% /a%,

2. MAING STERN&A': &h%n a)8$n# d*/n.

3. TURNING TO PORT: B*/ $s m*+$n# * h% -%0.


10/52

TERMINOLOG' C*n’dRIGHT;LEFT HAND PROPELLERS

SINGLE;T&IN ENGINES

(. RIGHT HAND PROPELLER: S),%/s h,*!#h h% /a%, $n a)-*)8/$s% ,*a$*n -**8$n# a h% ,ans*m 0,*m h% s%,n. LEFT

HAND> h% *pp*s$%?.

2. M*s s$n#-% %n#$n% *as ha+% RIGHT HAND p,*ps * n h%m.

3. T&IN ENGINED: Us!a--" ha+% )*!n%,9,*a$n# p,*ps * *00s%

*,4!% /$h RIGHTHAND p,*p *n sa,*a,d -%0 hand p,*p *n

p*, s$d%. &$h*! )*!n%,9,*a$n# p,*ps +%ss%- /*!-d % a-m*s

$mp*ss$-% * s%%,.


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SUCTION SCRE& CURRENT(. SUCTION: In)*m$n# /a%, )!,,%n FROM 0*,/a,d *0h% p,*p%--%,

2. DISCHARGE: O!#*$n# )!,,%n a0 *0 h% p,*p%--%,

3. RUDDER>S? a,% p-a)%d $n h% )%n%, *0 h%

DISCHARGE 0-*/ and h% )!,,%n *0 /a%, ,!sh$n# "

p,*d!)%s a p,%ss!,% *n h% ,!dd%, -ad% /h$)h )*n,*-s

h% d$,%)$*n *0 h% *a m*+$n# $n h% /a%,.

S? a,% ONL' EFFECTI@E /h%n h%

*a m*+%s h,*!#h h% /a%,.


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SUCTION SCRE& CURRENT


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PROPELLERS

(. RIGHT9HANDED: @$%/ 0,*ms%,n. P,*p%--%, $s !,n$n#

CLOC&ISE > NOTE

OUTSIDE TIP AT TOP?

2. LEFT9HANDED: T!,n$n#

COUNTER9CLOC&ISE.


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LEFT HAND ; RIGHT HAND

PROPELLERS


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Prop Walk


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PROPELLERS

TORUE EUAL ; UNEUAL BLADE THRUST

&h%n m*+$n# 0*,%/*,d RIGHTHAND p,*ps p,*d!)%

GREATER h,!s * sa,*a,d a h% s%,n AND

LEFTHAND p,*ps p,*d!)% G,%a%, h,!s * P*, a h%

s%,n.

ALL PROPELLERS REL' ON SMOOTH FLO& OF&ATER 0*, ma1 %00$)$%n)".


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EFFECT OF TORUE B' SINGLE

SCRE& RIGHT HAND TURNING

PROPELLER MO@ING FOR&ARD

(. TORUE /$-- m*+% h% s%,n *

h% ,$#h.

2. AL&A'S +$s!a-$% h%

DIRECTION OF MO@EMENT

OF THE TOP *0 h% p,*p 0*,DIRECTION OF MO@EMENT

OF STERN.


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HANDLING CHARACTERISTICSPLANING @s. DISPLACEMENT HULLS

(. HEA@' BUILT: D$sp-a)%m%n -*ad )a,,"$n# h!--s.

Sa-%. S-*/%,.

2. LIGHTER BUILT: P-an$n# Sp*, h!--s. Sha--*/%,

d,a0. M!)h 0as%,. L%ss sa-%.

3. BOTH: Hand-% )*mp-%%-" d$00%,%n-" %sp%)$a--" $nh%a+" /%ah%,


19/52

HANDLING C*n’d&IND=CURRENT @s. HULL T'PES

(. HANDLING: ALL HULLS a00%)%d " &IND and

CURRENT.

2. HIGH BO&S: T%nd * 0a-- *00 h% /$nd NO MATTER

/ha $s d*n% * p,%+%n $ %sp%)$a--" a -*/ sp%%ds.

3. CURRENT: B$##%s ,%a)$*n 0a)*, $n a-- h!-- "p%s.


20/52

HANDLING C*n’dEXPOSED HULL AREA @s. &IND = DRAFT=

CURRENT

(. Th% m*,% s,!)!,% a*+% h% /a%, h% m*,% %00%)

0,*m /$nd.

2. Th% d%%p%, h% d,a0 h% m*,% %00%) 0,*m )!,,%n.

3. E00%) *0 )!,,%n $s #,%a%, han %00%) *0 /$nd *nd$sp-a)%m%n h!--s.


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MOORING LINES

BO& TO STERN

(. BO& LINE: S*ps h% */ 0,*m m*+$n# a0

2. BO& BREAST: S*ps h% */ 0,*m m*+$n# *!/a,d 0,*m h%d*)8.

3. AFTER BO& SPRING: S*ps h% *a 0,*m m*+$n# 0*,%/*,d


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MOORING LINES


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animation


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TURNING THE RUDDER OR ENGINE


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MANEU@ERING T&IN SCRE&

BOAT


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SPRING LINES


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SPRINGING OR &ARPING INTO

(. &ARPING: B%nd a m**,$n# -$n% * a */ )-%a and pass $ * a

p%,s*n *n h% d*)8 * s%)!,% $ * a )-%a *, $.

2. Sh*,%n h% -$n% *n h% *a s$d% * s!$ and )-%a $ *00.

3. I0 "*!’+% d*n% h$s *n h% sa,*a,d s$d% p! h% ,!dd%, *

PORT and #$+% h% %n#$n% m*d%,a% p*/%, AHEAD.


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SPRINGING INTO THE DOC


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CLICK

Take It...

With Wind or Current From the


30/52

With Wind or Current From the

Dock

•DEPLOY FENDERS

• Approach the dock so!" at a #air"

sharp an$e %a&o't () de$rees*

• At the dock+ shi#t into ne'tra andsec're a &o! ine

• T'rn hard in the direction a!a" #rom

the dock• So!" $o #or!ard a$ainst the &o!

ine

• The stern !i mo,e to!ard the dock

CLICK


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A N I - A T

I O N


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WITHOUT WIND OR CURRENT

• DEPLOY FENDERS

• Approach the dock at a ,er" si$ht

an$e %/ to 0/ de$rees*

• 1hen the &o! is cose to dock+ shi#t

into re,erse to so! head!a"

• Ease into the andin$

CLICK


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A N I - A T I O N


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Into the Wind or Current

• DEPLOY FENDERS• Approach the dock at a si$ht an$e

%0/ to 2/ de$rees*

• 1hen the &oat is cose to the dock+

t'rn the &oat so that it is parae to

the dock

• P't the &o! ine o,er #irst

• The stern !i then s!in$ into the

andin$ CLICK


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A N I -

A T I O N


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With Wind or Current Astern

• DEPLOY FENDERS

• Approach the dock at a si$ht an$e

• 1hen the &o! is cose+ 'se re,erseto so! head!a"

• -ake #ast the stern ine

• -ake #ast the &o!ine

• T3IS APPROAC3 IS 4ERY DIFFIC5LT

AND S3O5LD 6E A4OIDED • 6e read" to 'se re,erse $ear at a

timesCLICK


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1IND TO573 888

A4OID 888


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With Wind or Current Toward the

Dock • DEPLOY FENDERS

• Approach parae to the dock

• Shi#t into ne'tra

• Let the !ind and the c'rrent carr"

the &oat into the dock

CLICK


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A N I - A T I O N


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SPRINGING OR &ARPING OUT

STERN FIRST(. RIGHT ,!dd%,

2. SHORT a0%, */ sp,$n# /%-- )-%a%d *n *h %nds

3. RIGHT RUDDER * s/$n# h% s%,n a/a" 0,*m h% d*)8


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SPRINGING A&A' FROM DOC

STERN FIRST


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RE@IE& UESTIONS NO. ((. Th% pa, *0 h% )!,,%n ha 0-*/s $n* h%

p,*p%--%, $s )a--%d h% .

a. a)8 -ash )!,,%n

. a)8 $d% )!,,%n

). s!)$*n s),%/ )!,,%n

d. p*s s),%/ )!,,%n


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RE@IE& UESTIONS NO. 2

2. &h%n a ,$#h9hand%d p,*p%--%, $s !,n$n#

)-*)8/$s% h% *a /$-- #* .

a. 0*,/a,d

. a)8/a,d

). * h% ,$#h

d. * h% -%0


44/52

RE@IE& UESTIONS NO. 3

3. Th% s%,n *0 a s$n#-% s),%/ *a /$h a -%0 hand

p,*p%--%, %nds * #* /h%n h% p,*p%--%, $s,%+%,s$n#.

a. * sa,*a,d

. * p*,

). ah%ad

d. !p


45/52

RE@IE& UESTIONS NO. <


46/52

RE@IE& UESTIONS NO. 55. &h%n a)8$n# a s$n#-% s),%/ $n*a,d /$h a

,$#h9hand%d p,*p%--%, and ,!dd%, am$dsh$p h%

s%,n /$--

a. #* * sa,*a,d

. ,a)8 s,a$#h a)8 ). d,$0 * sa,*a,d

d. m*+% * p*,


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RE@IE& UESTIONS NO.

. Th% m**,$n# -$n% ha 8%%ps h% *a 0,*m #*$n#

ah%ad $s h%

a. B*/ -$n%

. F*,/a,d sp,$n#

). B,%as

d. a0%, */ sp,$n#


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RE@IE& UESTIONS NO. . B" #*$n# ah%ad *n *n% %n#$n% /h$-% ,%+%,s$n#

h% *h%, %na-%s a /$n s),%/ +%ss%- *

a. !,n $n a m!)h /$d%, a,%a

. !,n /$h$n $’s */n -%n#h

). !,n /$h$n (;3 *0 $’s */n -%n#h

d. a)8 %as$%,


49/52

RE@IE& UESTIONS NO. . G%$n# a/a" 0,*m a d*)8 /h%n h% *a $s

%$n# s% $n* $ " h% /$nd #%n%,a--" ,%4!$,%s

!s$n#.

a. an a0%, */ sp,$n# -$n%

. a ,%as -$n%). a *a h**8

d. a s%,n -$n%


50/52

RE@IE& UESTIONS NO. . B,%as -$n%s a,% s% h% *as h!--.

a. pa,a--%- *

. n%1 *

). p%,p%nd$)!-a, *

d. a


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RE@IE& UESTIONS NO. (J(J. Th% d$s)ha,#% )!,,%n *0 h% p,*p%--%, $s a-/a"s

-*)a%d *n

a. h% 6d*/n )!,,%n7 s$d% *0 h% p,*p%--%,

. h% 6!p )!,,%n 6 s$d% *0 h% p,*p%--%,

). %h$nd h% p,*p%--%,

d. ah%ad *0 h% p,*p%--%,


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END CHAPTER 5

seamanship ch. 5

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