888-B140-01r0 Load Line Calculation.pdf

Title Page 888-B140-01 Load Line Calculation

REV ZONE DRAWN CHKD

0 ‐ HCB JSS

GENERAL NOTES

NO.

SIZE REV

A 0

DATE: SCALE: SHEET 1 OF 5

DESCRIPTION DWG NO. REV.

REVISION HISTORY

DESCRIPTION DATE

1. INITIAL ISSUE 05APR23

1. Calculations are in accordance with 46 CFR Part 45 only and are considered maximum permissible geometric load line draft

HULL LINES AND OFFSETS 883‐B105‐01 0

0430‐001

MARINE DESIGN CENTER

REFERENCES

THE SHEARER GROUP, INC.

3118 HARRISBURG BLVD, SUITE 100

HOUSTON, TX 77003

TEL: (281) 532‐2080 ~ FAX (281) 326‐1615

www.shearer‐group.com

CELRE DECK BARGES

DRAWN BY: CHECKED BY: 150'‐0" X 38'‐0" X 10'‐0"

CRB HCB

NTS

OUTBOARD PROFILE 883‐B205‐01 0

APP'D BY: PROJECT NO. DWG. NO.

3383 888‐B140‐01

DATE: TSGI PROJ #:

GREAT LAKES LOAD LINE CALCULATIONS05APR23

Summary 888-B140-01 Load Line Calculation

PROJECT: 3383 Rev: 0 By: HCB CALC: Date: 4/5/2023 Checked: JSS

Summary

27.84 inches below deck line

25.51 inches below deck line

31.72 inches below deck line

29.78 inches below deck line

2.17 inches below each FW marks

Winter Freeboard

Intermediate Freeboard

Salt Water Freeboard

888‐B140‐01 Cathodic Protection Design Calculations ‐ Great Lakes Load Line Calculations

The calculations contained herein are performed to determine the required freeboards as set forth in 46 CFR Part 45 - Great Lakes Load Lines for a Type B vessel. The freeboards calculated are indicitive of the required freeboards based on the geometric properties of the barge. Final authority for load line assignment rests with USCG and/or third party classification society and is subject to other factors (ie stability requirements, USACE self limited drafts, ect) that may result in different freeboard requirements being officially assigned.

Summer Freeboard

Midsummer Freeboard

Estimated GREAT LAKES Loadline 888-B140-01 Load Line Calculation

150' x 38' x 10' Unmanned Deck barge

Estimation of Great Lakes Maximum Geometric Permissible Loadline Freeboard & Draft Freeboard Particulars:

Metric Units: English Units:

LWL 0.85D = 45.61 m Sheer Ordinates: LWL 0.85D = 149.65 ft Sheer Ordinates:

LL Length = 43.79 m FP = 693.74 mm LL Length = 143.67 ft FP = 27.3125 in Breadth = 11.58 m 1/6F = 0 mm Breadth = 38 ft 1/6F = 0 in

Depth = 3.05 m 1/3F = 0 mm Depth = 10 ft 1/3F = 0 in 0.85D = 2.59 m 1/3A = 0 mm 0.85D = 8.5 ft 1/3A = 0 in

Displ @ 0.85D = 1307 MT 1/6A = 0 mm Displ @ 0.85D = 1286 LT (est, FW) 1/6A = 0 in Displ @ LL = 1186 MT AP = 0 mm Displ @ LL = 1167 LT (est, FW) AP = 0 in

Scantling Draft = 2.37 m Scantling Draft = 7.76 ft Stringer Plate Thickness = 25 mm Stringer Plate Thickness = 1.000 in

Keel Plate Thickness = 13 mm Keel Plate Thickness = 0.50 in MT per cm immersion @ LL = 5.25 MT/cm TPI @ LL = 13.11 LT/in (GHS, 7.75' FW)

Midship Location = 22.86 m, aft FR 0 Midship Location = 75.00 ft, aft FR 0

Notes: Unmanned Type "B" If Unmanned, No minimum bow height requirement If Manned, minimum bow height requirement; f(L,CB)

46 CFR 45.53 Summer Freeboard F = 12*P1*D

P1 = 0.1652 per 46 CFR 45.55 D = 10.08 ft

F = 19.99 in (Tabular) F CORRECTED = 27.84 in (including applicable corrections) Molded Draft = 7.76 ft

45.55 Freeboard Coefficient Table 12(1)

for L<350 feet, P1 = P+A[(L/D)-(L/Ds)] P A L/Ds

P = 0.1332 140 0.1318 0.00546 8.09375 A = 0.00529 143.67 0.1332 0.00529 8.19110 interpolated

L/D = 14.25 150 0.1355 0.00500 8.35938 L/Ds= 8.19110

P1 = 0.1652 for L>350 feet, P1 = P

P1 = 0.1332

45.57 Correction: Position of Deck Line

n/a

45.58 Correction: Short Superstructure (Type B, 79<L<500 feet with effective superstructures <0.25L) CSHORT SS = n/a 0.03(500-L)(0.25-E/L) inched (freeboard increase)

E = 0 for no effective superstructure L = 143.67 ft

45.61 Correction for Superstructures and trunks

n/a

45.63 Correction for sheer

Minimum summer freeboard increased by deficiency or decreased by excess (as limited by 45.65) of sheer calculated from Table 4, multiplied by 0.75-(S/2)L

Sheer Calculation Station Ordinate SM Product

After Half

AP 0 1 0

L/6-AP 0 3 0

L/3-AP 0 3 0

Midships 0 1 0 Sum of AFT Products: 0

After Standard Sheer .2665L+26.65 64.94 Difference = Sum - STD -64.94 deficiency

AFT Sheer: Diff/8 -8.12 deficiency

Forward Half FP 27.3125 1 27.3125

L/6-FP 0 3 0

L/3-FP 0 3 0

Midships 0 1 0 Sum of FWD Products: 27.3125

FWD Standard Sheer .5330L+53.3 129.87 Difference = Sum - STD -102.56 deficiency

FWD Sheer: Diff/8 -12.82 deficiency

Sheer Summation AFT Sheer -8.12

FWD Sheer -12.82 Net Shear -20.94

Mean: Net/2 -10.47

CSHEER = 7.85 0.75-(S/2L)*mean with S = 0 for no effective superstructure (freeboard increase)

45.69 Correction for bow height n/a unmanned

45.71 Midsummer Freeboard

fms = f(s)-0.3Ts f(s) = 27.84 summer freeboard (in) Ts = 7.76 ft, distance top of keel to summer load line fms = 25.5 in

45.73 Winter Freeboard

fw = f(s)+Ts(200/L) f(s) = 27.84 summer freeboard (in) Ts = 7.76 ft, distance top of keel to summer load line

L = 400.00 L, not less than 400 ft fw = 31.7 in

45.75 Intermediate Freeboard

fi = f(s)+Ts(100/L) fi = 29.8 in

45.77 Salt Water Freeboard

Addition = D/41T D = 1167 LT, FW at LL T = 13.11 LT/in, FW at LL

SW Addition = 2.2 inches