A.03.09 Drawings MV Kenneth Eddy.pdf

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DESCRIPTION

TILLER HUB LOCK NUT

OUTBOARD TILLER HUB

INBOARD TILLER HUB

TILLER HUB BASE PLATE, 8" ID, 24" OD, 1.5" THICK

WEAR BEARING, 10.5" ID, 24.5" OD, 0.75" THICK

UPPER BEARING, 7.75" ID, 9.25" OD, 7.25"

LONG RUDDER TUBE, 1 O" SCH XXS PIPE

LOWER BEARING, 8.25" ID, 9.75" OD, 10.875" LONG

SHAFT SEAL, 12" OD x 8 1/4" ID

SEAL RETAINING RING

RUDDER STOCK

TILLER HUB KEY

RUDDER BLADE

6"¢ 4 THREADS/INCH

UNITED AND AMERICAN STANDARD,

CLASS 3A

5"

0 NUT

MATERIAL

A-36 STEEL

A-36 STEEL

A-36 STEEL

A-36 STEEL

THORDON SXL, G.N.2

THORDON SXL, G.N.2

ASTM A-106

THORDON SXL, G.N.2

NEOPRENE/A-36 STEEL

A-36 STEEL

AQUAMET 17

A-36 STEEL

A-36 STEEL

SCALE: 1" = 1 '-0"

TYP

5/16 5/16

BOTTOM PLATE

3"x3/8" FB

WELD TO NUT

AND

RUDDER STOCK

REF 2 ---!------ 1

5/16 TYP'>----i---+---+Ll"'

5/16

REF.1

MNDK

3/4" (G.N. 5)

1 /8" s/s CLADDING

TYP ON LEADING EDGE) L

' 9" (G.N. 4) t >";7 1 60

59 58

= EXPLODED VIEW f ASSEMBLED VIEW

SCALE: 1 /2" = 1 '-0" SCALE: 1/2" = 1 '-0"

8 7 6 5

1/2 r.

/16"

I3�4" KEYWAY

EPTH (AT SIDE)

, (G.N. 6)

SEE 3-7C

(TYP)

1/2" (TYP)

7 1/4" ¢ 8 3/4" ¢ <'+-

+---*--<TYP

1/2

13 3/4"

@ INBOARD TILLER HUB

2 7 /32"

1 O" SCH XXS PIPE

(8 3/4" ID, 10 3/4" OD)

3/4" PL

14" O.D. MECHANICAL TUBING

(2 1 /2" WALL THICKNESS)

SCRIBE FIT TO

BOTTOM SHELL

SCALE: 1" = 1 '-0"

26" ¢ 24 1/2" ¢

101 ¢

3/8

19 1/2" 13 3/8"

1/2

DRILL & TAP FOR 3/8" BOLT (8 PLCS)

EQUAL SPACES

ON 11 "¢ BOLT CIRCLE

3/4" 7/8"

0 RUDDER TUBE

SCALE: 1" = 1 '-0"

4 3

13" 12"

16 1/2"

1 :12 TAPER

ZONE REV

REVISIONS

DESCRIPTION DATE APPROVED

32 11/16"

7 3/4" KEYWAY

EPTH (AT SIDE)

(G.N. 6)

7 1/4" ¢ 8 3/4" ¢

SEE 3-7C

3/4" PL RING (TYP)

5" OD, 2" ID

3 1/2" R l 1 1/2" (TYP)

13 3/4"

@ OUTBOARD TILLER HUB

SCALE: 1" = 1 '-0"

GENERAL NOTES

1. ALL MATERIALS AND WORKMANSHIP SHALL BE IN ACCORDANCE WITH ABS

STANDARDS AND TO THE SATISFACTION OF THE SURVEYOR.

2. THORDON SXL BEARING DIMENSIONS GIVEN ARE NOMINAL. EXACT

DIMENSIONS TO BE OBTAINED FROM THORDON PRIOR TO FINAL MACHINING.

3. KEYWAY TO BE CUT PARALLEL TO TAPER.

4. RUDDER SHALL BE ALIGNED FOR BOTTOM OF BOTTOM PLATE 9" ABL.

5. STRIKE PLATES HEIGHT TO BE DETERMINED BY SHIPYARD, LIMITING RUDDER

LIFT TO 3/4".

6. MINIMUM KEYWAY DEPTH CLEARANCE = 0.03"

FOR 3/8" DRAW.

7. TILLER STOP DOUBLER PLATES TO BE SIZED TO OVERLAP NEAREST FRAME

OR HEADER. POSITION TILLER STOPS AFTER INSTALLATION OF TILLER ARMS

TO ALLOW 1 /2" PAST LIMIT BUT PRIOR TO CYLINDER BOTTOM/MAX OUT.

8. ALL MATERIAL A36 STEEL UNLESS OTHERWISE NOTED.

9. RUDDER & STOCK APPROVED FOR A MAX. SPEED OF 12 MPH AND

A MAX. RUDDER ANGLE OF 45'.

1. 556-D305-01

2. 556-D307-01

A CONRAD INDUSTRIES CO.

710MAAl<ETSTREET--ORANQE,TEXAS778JO

DRAWN CI-MBT

DATE 05/24/04

OSB

REFERENCE

LONGITUDINAL STRUCTURE

DECK & BOTTOM STRUCTURE

DEPARTMENT OF THE ARMY

MARINE DESIGN CENTER

CORPS OF ENGINEERS

CELRH 124'0" TOWBOAT

STEERING RUDDER DETAILS

& INSTALLATION DETAILS

SIZE PROJECT NO.

1-:-'.:-:-:-·:------10 2350 556-0612-01 0

�.D.C. APPV'D SCALE AS NOTED FlLE 556-D612-010 SHEEr 1 OF 3

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EXPLODED VIEW

SCALE: 1/2" = 1 '-0"

TYP

5/16 5/16

PC.

QTY

MK.

2A 2

2B 2

3 4

4 4

5 4

8 4

10 4

11 4

12 4

DESCRIPTION

TILLER HUB LOCK NUT

OUTBOARD TILLER HUB

INBOARD TILLER HUB

TILLER HUB BASE PLATE, 8" ID, 24" OD, 1.5" THICK

WEAR BEARING, 10.5" ID, 24.5" OD, 0.75" THICK

UPPER BEARING, 7.5" ID, 9.25" OD, 7.25" LONG

RUDDER TUBE, 10" SCH XXS PIPE

LOWER BEARING, 8.00" ID, 9.75" OD, 10.875" LONG

SHAFT SEAL

SEAL RETAINING RING

RUDDER STOCK

TILLER HUB KEY

RUDDER BLADE

5.75"¢ 4 THREADS/INCH

UNITED AND AMERICAN STANDARD,

CLASS 3A

5"

0 NUT

SCALE: 1" = 1'-0"

3"x3/8" FB

WELD TO NUT AND

RUDDER STOCK

TYP

5/16 5/16

3/16

--+--+--<TYP

REF.1

6'-6" BUTT

54 53 52

ASSEMBLED VIEW

SCALE: 1/2" = 1 '-0"

7 6

MATERIAL

A-36 STEEL

A-36 STEEL

A-36 STEEL

A-36 STEEL

THORDON SXL, G.N.2

THORDON SXL, G.N.2

ASTM A-106

THORDON SXL, G.N.2

NEOPRENE/A-36 STEEL

A-36 STEEL

AQUAMET 17

A-36 STEEL

A-36 STEEL

18"

REF.1

12" 16 1/2"

8 3/4" ¢

3/ 4" KEYWAY DEPTH

(AT SIDE)

G.N. 6

@ OUTBOARD TILLER HUB

22.5'

13 3/4"

7 1/4"

3/8

3/8

STBD SIDE SHOWN, PORT SIM & OPP

TILLER ARMS ROTATED FLAT FOR CLARITY

SCALE: 1" = 1 '-0"

26" ¢

24 1/2" ¢ 10" ¢

5 5/8" -+----

3/4" PL

14" O.D. MECHANICAL TUBING

(2 1 /2" WALL THICKNESS)

3/8

1/2

19 1/2"

SCRIBE FIT TO

BOTTOM SHELL

PLATE

�JI

/8"

I

3/4" PL RING (TYP)

7" OD, 2" ID

SEE 3-7C

34.5"

I 3/8

3/8

I 13 3/4"

7 1/4"

ZONE REV

REVISIONS

DESCRIPTION

1/4" FILLET (TYP)

1 1 /2" KEYWAY

WIDTH

3/ 4" KEYWAY DEPTH

(AT SIDE)

(G.N. 6)

DATE

12" 1 16 1/2" 18" j

APPROVED

1/2 8 3/4" ¢

@ INBOARD TILLER HUB

STBD SIDE SHOWN, PORT SIM & OPP

TILLER ARMS ROTATED FLAT FOR CLARITY

SCALE: 1" = 1 '-0"

5 5/8" x 3/4" FB

GENERAL NOTES

1. ALL MATERIALS AND WORKMANSHIP SHALL BE IN ACCORDANCE WITH ABS

STANDARDS AND TO THE SATISFACTION OF THE SURVEYOR.

2. THORDON SXL BEARING DIMENSIONS GIVEN ARE NOMINAL. EXACT

DIMENSIONS TO BE OBTAINED FROM THORDON PRIOR TO FINAL ASSEMBLY.

3. KEYWAY TO BE CUT PARALLEL TO TAPER.

4. RUDDER SHALL BE ALIGNED FOR BOTTOM OF BOTTOM PLATE 7 1 /2" ABL.

5. STRIKE PLATES HEIGHT TO BE DETERMINED BY SHIPYARD, LIMITING RUDDER

LIFT TO 3/4".

6. MINIMUM KEYWAY DEPTH CLEARANCE = 0.03"

FOR 3/8" DRAW.

7. TILLER STOP DOUBLER PLATES TO BE SIZED TO OVERLAP NEAREST FRAME

OR HEADER. POSITION TILLER STOPS AFTER INSTALLATION OF TILLER

ARMS TO ALLOW 1 /2" PAST LIMIT, BUT PRIOR TO CYLINDER BOTTOM/MAX

OUT.

8. ALL MATERIAL A-36 STEEL UNLESS OTHERWISE NOTED.

9. RUDDER STOCK OF FLANKING RUDDER REVIEWED FOR MAX. SPEED OF 12

MPH AND RUDDER ANGLE OF 45".

10. TRAILING EDGE OF FLANKING RUDDERS TO BE FIELD SCRIBED AND CUT TO

PERMIT A 1" GAP TO NOZZLE WHEN RUDDER IN HARD OVER POSITION.

'A-A' SECTION SECTION 'B-B' REFERENCE

LONGITUDINAL STRUCTURE

DECK & BOTTOM STRUCTURE

'B'

67"

'B'l_

DRILL & TAP FOR 3/8" BOLT

(8 PLCS) EQUAL SPACES

ON 11 "¢ BOLT CIRCLE

-j'A' ¢9 3/4"

FB TAB

® RUDDER TUBE

SCALE: 1 " = 1 '-0"

4 3

1. 556-D305-01

2. 556-D307-01

3. 556-D305-02 ----- TRANSVERSE FRAMING

-��9.�

A CONRAD INDUSTRIES CO.

710 MMl<ET SIREET- TEKA5 77830

PHON::4011-BIIJ-1111611 FAX40B-BB2--0IIOB

DRAWN CI-MBT

DATE D5/24/D4

CHECKED BY OSB

YARD APPV'D

DEPARTMENT OF THE ARMY

MARINE DESIGN CENTER

CORPS OF ENGINEERS

CELRH 124'0" TOWBOAT

FLANKING RUDDER DETAILS

& INSTALLATION DETAILS

t-kB-.S.-�-W-,-----io 2350 556-0612-02 0

�.D.C. APPVD

SCALE NONE FlLE 556-D612-020 SHEET 1 OF 3

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REV. DATE APRD.

- 1/26/2025

DR. BY DES. BY CHK'D BY

JLS MRN

APRD. FOR THE DIR. - CH. DES. BR. SIZE REV.

DATE

SHEET: COVER

REVISIONS

DESCRIPTION

ORIGINAL ISSUE

MARINE DESIGN CENTER

1650 Arch Street, Philadelphia PA 19103

RECOMMENDED

DEPARTMENT OF THE ARMY

MARINE DESIGN CENTER

CORPS OF ENGINEERS

26 JANUARY, 2025

CELRH M/V KENNETH EDDY

SCALE: NTS

A -

MATT NEWBORN, P.E. NA

DRAWING NO.

556-D405-02

HULL ANODE CALCULATION

PROJECT NO.

TIM KEYSER, P.E. NA

For steel and aluminum boat hulls (or underwater structures), the following formula can be used to calculate the total weight (in pounds) of sacrificial anodes required.

Anode Weight (lbs) = [(Wetted Surface Area) x (Current Density) x (Immersion)] [(Energy Content) x (1000 mA/Amp)]

Wetted Surface Area = 5200 ft2 (empirical estimate)

Current Density = 2mA/ft2 (steel hull, low velocity water flow, well coated)

Immersion = 43,830 hrs (5 yr)

Energy Content = 1108 amp-hrs (aluminum anodes)

Anode Weight (lbs) = 411

Use 400 lbs of Aluminum Anodes

Wetted Surface Area (sq-ft): Actual or Estimated Wetted Surface of Metal

Current Density (mA per sq-ft): 1.5 – 5.0 for painted Steel hull / structure

0.2 – 3.0 for painted Aluminum hull / structure

Immersion (hours): Number of hours in water per replacement interval (8766 hours per year)

Energy Content (amp-hours per pound): 368 for Mil-Spec zinc anodes 1108 for Mil-Spec aluminum anodes

Estimating Wetted Surface Area of Boat Hulls:

= 1.0 LWL x (Beam + Draft) for full displacement vessels (motor yachts and sail boats)

= 0.75 LWL x (Beam + Draft) for medium displacement vessels

= 0.50 LWL x (Beam + Draft) for light-displacement vessels

Source: ABYC Corrosion Certification Study Guide Estimating Current Density:

The amount of electric current required from anodes protecting a metal hull (or structure) in seawater is primarily a function of the water's flow rate and the quality of the metal's protective paint coating. BoatZincs.com issues the following design estimates:

Steel Hull or Structure

Stationary (0 - 0.5 mph):

Well coated = 1.5 mA/sq-ft Poor or old coating = 2 mA/sq-ft Uncoated = 3 mA/sq-ft

Low Velocity Water Flow (0.5 - 2 mph):

Well coated = 2 mA/sq-ft Poor or old coating = 4 mA/sq-ft Uncoated = 5 to 15 mA/sq-ft

Medium Velocity Water Flow (2 - 5 mph):

Well coated = 3 mA/sq-ft Poor or old coating = 5 mA/sq-ft Uncoated = 15 to 30 mA/sq-ft

High Velocity Water Flow (>5 mph):

Well coated = 5 mA/sq-ft Poor or old coating = 10 mA/sq-ft Uncoated = 25 to 100 mA/sq-ft

Aluminum Hull or Structure

Stationary (0 - 0.5 mph):

Well coated = 0.5 mA/sq-ft Poor or old coating = 1 mA/sq-ft Uncoated = 2 mA/sq-ft

Low Velocity Water Flow (0.5 - 2 mph):

Well coated = 1 mA/sq-ft Poor or old coating = 2 mA/sq-ft Uncoated = 4 to 8 mA/sq-ft

Medium Velocity Water Flow (2 - 5 mph):

Well coated = 2 mA/sq-ft Poor or old coating = 3 mA/sq-ft Uncoated = 5 to 12 mA/sq-ft

High Velocity Water Flow (>5 mph):

Well coated = 3 mA/sq-ft Poor or old coating = 5 mA/sq-ft Uncoated = 10 to 25 mA/sq-ft