Dnv Car Ferry

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RULES FORCLASSIFICATION OF

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Veritasveien 1, NO-1322 Hvik, Norway Tel.: +47 67 57 99 00 Fax: +47 67 57 99 11

HIGH SPEED, LIGHT CRAFT ANDNAVAL SURFACE CRAFT

SPECIAL SERVICE AND TYPEADDITIONAL CLASS

PART 5 CHAPTER 2

CAR FERRYJANUARY 2009

CONTENTS PAGE

Sec. 1 General Regulations ................................................................................................................... 5Sec. 2 Arrangement............................................................................................................................... 7Sec. 3 Structures, Equipment ................................................................................................................ 8Sec. 4 Fire Safety - Car Ferries ........................................................................................................... 14Sec. 5 Control and Monitoring............................................................................................................ 15


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CHANGES IN THE RULES

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General

The present edition of the rules includes additions and amendmentsdecided by the Board in December 2008 and supersedes the January2002 edition of the same chapter.

The rule changes come into force as indicated below.

This chapter is valid until superseded by a revised chapter. Supple-

ments will not be issued except for an updated list of minor amend-ments and corrections presented in Pt.0 Ch.1 Sec.3. Pt.0 Ch.1 isnormally revised in January and July each year.

Revised chapters will be forwarded to all subscribers to the rules.Buyers of reprints are advised to check the updated list of rule chap-ters printed Pt.0 Ch.1 Sec.1 to ensure that the chapter is current.

Main changes coming into force 1 July 2009

Sec.1 General Requirements

A new item E102 has been inserted covering requirements for

Failure Mode and Effect Analysis (FMEA) as a consequence ofthe HSC Code. The subsequent item has been renumbered.

The renumbered item E104 has been amended to cover docu-mentation of control and monitoring systems of bow doors andtelevision surveillance. Table D1 has been deleted.

Sec.5 Control and Monitoring

This new section has been introduced to cover requirements forinstrumentation and automation additional to those given in Pt.4Ch.9 Control and Monitoring System and Pt.4 Ch.14 SteeringGear.

Corrections and Clarifications

In addition to the above stated rule requirements, a number of correc-tions and clarifications have been made to the existing rule text.


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Rules for High Speed, Light Craft and Naval Surface Craft, January 2009 Pt.5 Ch.2 Contents Page 3

DETNORSKEVERITAS

CONTENTS

SEC. 1 GENERAL REGULATIONS.............................. 5

A. Classification..........................................................................5A 100 Class notation....................................................................5

A 200 Definitions.........................................................................5

B. Application.............................................................................5B 100 The HSC Code..................................................................5B 200 Cars ...................................................................................5

C. Safety for Persons Onboard.................................................5C 100 General..............................................................................5

D. Service Restrictions...............................................................5D 100 General..............................................................................5

E. Documentation ......................................................................6E 100 Plans and particulars .........................................................6

SEC. 2 ARRANGEMENT................................................ 7

A. Hull Arrangement .................................................................7A 100 General..............................................................................7A 200 Collision bulkheads...........................................................7A 300 Doors and access openings ...............................................7A 400 Signboards.........................................................................7

B. Bow Arrangement .................................................................7B 100 Bow ramp arrangement.....................................................7B 200 Structural arrangement......................................................7B 300 Closing and securing arrangement....................................7

SEC. 3 STRUCTURES, EQUIPMENT.......................... 8

A. Wheel Loadings and Car Deck Structure.......................... 8A 100 Design loads......................................................................8

A 200 Steel plating ......................................................................9A 300 Stiffeners of steel ............................................................10A 400 Steel girders ....................................................................10A 500 Aluminium plating..........................................................10A 600 Aluminium stiffeners ......................................................10A 700 Aluminium girders..........................................................11

B. Stability ............................................................................... 12B 100 General............................................................................12

C. Bilge Arrangement or Drainage ....................................... 12C 100 Drainage..........................................................................12

D. Bow Door Structure ........................................................... 12D 100 Design loads....................................................................12D 200 Strength criteria...............................................................12D 300 Closing arrangement strength .........................................12

SEC. 4 FIRE SAFETY - CAR FERRIES..................... 14

A. Application.......................................................................... 14A 100 Application......................................................................14

SEC. 5 CONTROL AND MONITORING................... 15

A. General Requirements....................................................... 15A 100 General............................................................................15

B. System Design..................................................................... 15B 100 General............................................................................15


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Rules for High Speed, Light Craft and Naval Surface Craft, January 2009 Pt.5 Ch.2 Sec.1 Page 5

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SECTION 1GENERAL REGULATIONS

A. Classification

A 100 Class notation101 High Speed and Light Craft built in compliance with therequirements for the notation Passengerand in addition tothe relevant requirements in this chapter may be given one ofthe following class notations:

Car Ferry A,(or B), (or C).

Ch.1 Sec.2 A201 and B201 are not applicable to craft with no-tation Car Ferry C.

Guidance note:

Ch.1 Sec.2 A201 reads:

The number of passengers used for the maximum loading condi-tion of the craft shall be established from the number of perma-nent seats on board.

Ch.1 Sec.2 B201 reads:On board high speed craft safety belts shall be provided for allseats from which the craft can be operated.

---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

102 Craft arranged for carriage of vehicles in enclosed spac-es and built in accordance with the relevant requirements asspecified may be given the class notation Car Ferry A.

103 Craft arranged for carriage of vehicles on weather deckor in open ro-ro spaces built in accordance with relevant re-quirements for open ro-ro cargo space may be given the classnotation Car Ferry B.

104 Craft with an operational speed of less than 25 knots,and arranged for carriage of vehicles on weather deck, may begiven the class notation Car Ferry C.

105 For craft with a car ferry class notation a statement of thetotal effective deck area for cars will be entered in the Regis-ter of vessels classed with DNV, e.g. 850 m2cardk.

106 Text quoted from the 2000 International Code of Safetyfor High-Speed Craft (2000 HSC Code) is printed in italics.

107 For the application of these rules, wherever the termAd-ministrationis quoted, this shall be read as Society.

A 200 Definitions

201 Special category spaces are those enclosed spaces in-tended for the carriage of motor vehicles with fuel in their tanksfor their own propulsion, into and from which such vehicles can

be driven and to which passengers have access, includingspaces intended for the carriage of cargo vehicles.

(HSC Code 1.4.45)

202 Ro-ro cargo spacesare spaces not normally subdividedin any way and extending to either a substantial length or theentire length of the ship in which goods (packaged or in bulk,in or on rail or road cars, vehicles (including road or rail tank-ers), trailers, containers, pallets, demountable tanks or in or onsimilar stowage units or others receptacles) can be loaded andunloaded normally in a horizontal direction.

203 Open ro-ro cargo spacesare ro-ro cargo spaces eitheropen at both ends, or open at one end and provided with ade-quate natural ventilation effective over their entire length

through permanent openings in the side plating or deckhead.204 Closed ro-ro cargo spacesare ro-ro cargo spaces whichare neither open ro-ro cargo spaces nor weather decks.

205 Weather deckis a deck which is completely exposed tothe weather from above and from at least two sides.

206 Car Ferry A:Car ferries with special category spaces.

207 Car Ferry B:Car ferries with cars in open ro-ro cargo

spaces or on weather deck.208 Car Ferry C: Car ferries with cars on weather deck.

209 Open vehicle spaces are spaces:

.1 to which any passengers carried have access;

.2 intended for carriage of motor vehicles with fuel in theirtanks for their own propulsion; and

.3 either open at both ends or open at one end and providedwith adequate natural ventilation effective over their entirelength through permanent openings in the side plating ordeckhead or from above.

(HSC Code 1.4.34)

B. Application

B 100 The HSC Code

101 The requirements of this chapter apply to craft whichmay be defined within the International Code of Safety forHigh Speed Craft (the 2000 HSC Code), but also to craft whichmay be operated under equivalent certificates.

102 The requirements in this chapter apply to craft intendedfor regular transport of passengers and vehicles. Requirementslisted in Ch.1 for Passengernotation are also to be compliedwith.

103 The notation Car Ferry A is applicable to car ferries

with a totally enclosed car deck.104 The notation Car Ferry B is applicable to car ferrieswith car deck open for free ventilation in at least two ends, i.e.fore and aft or port and starboard.

105 The notation Car Ferry C is applicable to car ferrieswhere the car deck is an open weather deck.

B 200 Cars

201 Ferries may be designed for vehicles of various weightclasses and limitations on the weight of the cars shall be clearlymarked and given in the Appendix to the classification certif-icate.

C. Safety for Persons Onboard

C 100 General

101 Safety measures for craft with Car Ferry C notationwill be handled on a case by case basis, but are in general tocomply with the 2000 HSC Code and Pt.1 Ch.2 Sec.9. Meas-ures shall be taken to ensure that there is enough space betweenthe vehicles to allow for easy access to the muster stations inorder to evacuate.

D. Service Restrictions

D 100 General101 The requirements for Car Ferry B(or C) are normally

based on the craft operating on a national certificate with serv-ice restriction of 20 nautical miles or less. The Code for Dy-namically Supported Craft (DSC Code), IMO res. A.373(X)


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Rules for High Speed, Light Craft and Naval Surface Craft, January 2009Pt.5 Ch.2 Sec.1 Page 6

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only allows for special category spaces which implies CarFerry A. For Car Ferry B the arrangement and extendedservice restriction will be specially considered for each designof craft built under the DSC Code.

102 For craft built under this edition of the rules based on theHSC Code, Car Ferry Aand Car Ferry Bwill be given thesame maximum service restrictions.

Guidance note:The HSC Code allows for this principle as the open vehicle spaceis defined without any other restrictions than for craft with spe-cial category space.


103 The requirements for Car Ferry Care based on a morerestricted service than the HSC Code and equivalent require-ments are given without exemption from the safety level of thecode, as described in Pt.1 Ch.2 Sec.1 A200. Craft with the no-tation Car Ferry Cwill be given service restrictions R3orR4.

E. Documentation

E 100 Plans and particulars

101 The following plans and particulars shall be submittedfor approval:

arrangement, scantlings and closing appliances for doors arrangement, scantlings and supports for movable car

decks and ramps, if any loading manual containing information on the loading

conditions on which the hull scantlings are based make and type of vehicles with all relevant load data as

maximum axle load, number of wheels on each axle, de-sign, wheel print etc.

securing plan for vehicles with fastening and securing de-

vices arrangement of air intakes, ventilators etc. arrangement of doors from vehicle decks calculation of transverse strength arrangement of drainage openings or freeing ports for ve-

hicle deck boundary bulkheads of the special category spaces (if not

included on other drawings), including means of escape

power ventilation system including number of air changes/hour

fixed pressure water-spraying system (manual) fire main system portable fire extinguishers indicators on the bridge indicating when any fire door or

doors in Sec.2 B306 is closed precautions against ignition of inflammable vapours

location of water or fog applicators (minimum 3) location of portable foam applicators (minimum 2) arrangement of fire detectors and call points unless shown

on other drawings.

102 A Failure Mode and Effect Analysis (FMEA) shall beprepared for vessels required to comply with InternationalCode of Safety for High-Speed Craft 2000 (hereafter referredto as the HSC Code). The FMEA should follow guidelines inHSC Code Annex 4 and should include at least:

machinery systems and associated controls directional control system stabilization system integrated control and monitoring system

electrical system.

For Category B Passenger Craft, the FMEA shall take into con-sideration fire and flooding in one compartment (except in

bridge) as a single failure scenario.

A test programme demonstrating conclusions of the FMEAshall be prepared and submitted for approval together with theFMEA.

Guidance note:

Machinery auxiliaries, control and electric equipment locationserving independent system shall not be placed in the same firezone. Proper arrangement drawings shall be included in theFMEA. Exemptions will be considered in each case.


103 For required documentation of instrumentation and au-tomation, including computer based control and monitoring,see also Pt.4 Ch.9 and Pt.4 Ch.14.

104 Documentation for control and monitoring systems ofbow doors and television surveillance shall be submitted forapproval in accordance with requirements stated in Pt.4 Ch.9Sec.1.


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DETNORSKEVERITAS

SECTION 2ARRANGEMENT

A. Hull Arrangement

A 100 General

101 Special category spaces shall be structurally separatedfrom the operating compartment, passenger accommodationand evacuation routes as effectively as practical. If the adjacentarrangement of these spaces is permitted, provision shall bemade for easy evacuation of the passenger accommodationaway from the special category space.

A 200 Collision bulkheads

201 Collision bulkhead shall be arranged in accordance withPt.3 Ch.1 Sec.1 B300.

A 300 Doors and access openings

301 Arrangements and scantlings of doors in ships side andends are in general to satisfy the requirements given for themain class, with relevant additions as given below.

302 For ferries with the class notation Car Ferry Awarningindicator lights for open or locked doors shall be arranged alsoon the bridge.

303 For ferries with the class notation Car Ferry Bor CarFerry Copenings in sides and ends leading to the vehicle deckneed not have closing appliances.

304 Doors and sill heights are in general to satisfy the re-quirements given for the main class.

305 Doors leading from vehicle deck to engine room shallhave sill heights not less than 380 mm. Other doors leading

from vehicle deck within a closed superstructure to spaces be-low freeboard deck, are in no case to have sill heights less than230 mm. Access hatches for inspection of void spaces do notrequire any sill heights.

306 Ramps used for embarkation or disembarkation of pas-sengers to be fitted with suitable portable handrails.

A 400 Signboards

401 NO SMOKING signs shall be posted at all entries to ve-hicle space. Such signs are also to be prominently displayed inthe vehicle space.

B. Bow Arrangement

B 100 Bow ramp arrangement

101 Bow doors shall be situated above the freeboard deck.

102 Where bow doors are leading to a complete or long for-ward enclosed superstructure, an inner door shall be fitted. Theinner door shall be part of the collision bulkhead. A vehicleramp may be arranged for this purpose, provided the regula-tions concerning the position of the collision bulkhead are full-filled. See A201. If this is not possible a separate inner door hasto be installed.

103 Bow doors shall be so fitted as to ensure tightness con-sistent with operational conditions and to give effective protec-

tion to inner doors. Inner doors shall be weathertight, and shallbe arranged with supports on the aft side of the doors.

B 200 Structural arrangement

201 In general the strength of bow doors shall be equivalent

to the strength of the surrounding structure. Impact strengthen-ing shall be considered.

202 Bow doors of the visor or hinged opening type shall beadequately stiffened, and means shall be provided to preventlateral or vertical movement of the doors when closed. Ade-quate strength shall be provided in the connections of the lift-ing arms to the door structure and to the ship structure.

B 300 Closing and securing arrangement

301 Bow doors shall be fitted with adequate means of clos-ing and securing, commensurate with the strength of the sur-rounding structure.

302 Closing devices shall be simple to operate and easily ac-cessible.

303 Bow doors with clear opening area 12 m2

shall be pro-vided with closing devices with an arrangement for remotecontrol from a convenient position and with indication of theopen/closed position of every closing device. The operating

panel for remote controlled bow doors shall be inaccessible tounauthorized persons.

304 Notice plates, giving instructions to the effect that thedoors (inner and outer) shall be closed and all closing deviceslocked before leaving quay side (or terminal), shall be placedat the operating panel (or for small doors at the door when nooperating panel) and on the bridge.

305 Where hydraulic cleating is applied, the system shall bemechanically lockable in closed position. This shall be under-stood to mean that, in the event of failure of the hydraulic sys-tem, the cleating will remain locked.

306 Indicators shall be provided on the operating panel andon the navigation bridge for all shell doors, loading doors andother closing appliances which, if left open or not properly se-cured, could lead to major flooding of a special category spaceor ro-ro cargo space.

The indicator system shall be designed on the fail to safe prin-ciple and shall show if the door is not fully closed or not se-cured.

The power supply for the indicator system shall be independ-ent of the power supply for operating and securing the doors.

307 Means shall be arranged, such as television surveillance

or a water leakage system, to provide an indication to the nav-igation bridge of any leakage through bow doors, stern doorsor any other cargo or vehicle loading doors which could leadto major flooding of special category spaces or ro-ro cargospaces.

308 Special category spaces and ro-ro cargo spaces are eitherto be patrolled or monitored by effective means, such as tele-vision surveillance, so that movement of vehicles in adverseweather and unauthorized access by passengers can be ob-served whilst the ship is underway.

Guidance note:

Items 306, 307 and 308 apply to all passenger ships with Ro-Rocargo spaces or special category spaces as defined in SOLAS

regulation II-2/3.


309 Devices shall be arranged for the doors to be secured inopen position.


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102 If the arrangement and dimensions of footprints are notavailable for vehicles with pneumatic tyres the design pressuremay normally be taken as:

po = maximum tyre pressure in kN/m2.= 1 000 for cargo handling vehicles unless otherwise

specified

= for road transporters unless otherwisespecified

w = 1.0 in general

= 1.20 when double wheels are specified

= 1.27 when triple wheels are specified

av = as given in 101.

The load area dimensions are in general to be taken as:

k = k1in general

k1 = 2.0 for single wheel

= 2.0 for multiple wheels with axle parallel to stiffeners

= 0.8 for double wheels with axle perpendicular to stiff-eners

= 0.5 for triple wheels with axle perpendicular to stiffen-ers

k2 =

A =

Q and no= as defined in 101

no = 2 unless otherwise specified.

103 For heavy vehicles where the stowing and lashing ar-rangement may significantly affect the load distribution at sea,the design pressure for individual load areas will be specially

considered.

104 Deck areas for wheel loads from cargo handling vehi-cles, which are frequently operating in all directions, shall bechecked for design loads with axle parallel and perpendicularto stiffeners.

A 200 Steel plating

201 The thickness of steel deck plating subjected to wheelloading shall not be less than:

ka = 1.1 0.25 s/l

maximum 1.0 for s/l= 0.4

minimum 0.85 for s/l= 1.0

c = b for b < s= s for b > s

p, a and b = as given in 100

m =

m = 13.57 for b/s larger than 1.0.

Between specified values of b/s the m-value may be varied lin-early. The m-value may also be obtained from Fig.2.

= 320 f 1N/mm2(maximum) in general for seagoing con-

ditions= 370 f 1N/mm

2(maximum) in general for harbour con-

ditions= as given in Table A1, but not exceeding the above gen-eral maximum values, for upper deck within 0.4 Lamidships.

For upper deck between 0.4 L amidships and 0.1 L from theperpendiculars shall be varied linearly.

For tween decks shall be found by linear interpolation be-tween upper deck value and general maximum value taken atthe neutral axis.

Fig. 2

Bending moment factor (m-values)

= k2for plating when k2< k1and

ppo 9.81 0.5av+( )

9.81w------------------------------------------ kN/m

2( )=

120 Q 3+

a kA m( )=

b A k m( )=

wQ

nos2

---------- 100

A

2s--------

9.81wQ

nopo-------------------- m

2( )

t77.4ka kwc s p

m---------------------------------------- tk mm( )+=

Table A1 Allowable bending stress for upper deck platingwithin 0.4 L amidships

Arrangement Condition in N/mm2

Longitudinally

stiffened

Seagoing

R1-R3 280 f 1+ 60 (f 1 f 2)Longitudinallystiffened

HarbourR4-R5

355 f 1+ 20 (f 1 f 2)

Transverselystiffened

SeagoingR1-R3

185 f 1+ 135 (f 1 f 2)

Transverselystiffened

HarbourR4-R5

285 f 1+ 85 (f 1 f 2)

kw 1.34.2

a

s-- 1.8+

2------------------------- , maximum 1.0 for a 1.94s=

38

b

s---

2 4.7b

s--- 6.5+

--------------------------------------------- fo rb

s--- 1.0

xb

s---, not greater than 1.0 for plating=


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202 In Fig.3 a d the general thickness requirements of deckplating subjected to various wheel loading from pneumatictyres are given. The following parameter values have been as-sumed:

tyre pressure: po = 800 kN/m2 aspect ratio of plate field: l/s 2.5 allowable stress: = 370 N/mm 2

corrosion addition: tk = 0 mm.

A 300 Stiffeners of steel

301 The section modulus for deck beams and longitudinalssubjected to wheel loading shall not be less than:

kz = 1.0 for b/s < 0.6 and b/s > 3.4

=

=

c = as given in 201d = a for a < l

= lfor a > l

a, b and p = as given in 100

m =

m =

m =

r = factor depending on the rigidity of girders support-ing continuous stiffeners, taken as 29 unless bettersupport conditions are demonstrated

= 38 when continuous stiffener may be considered asrigidly supported at each girder.

Between specified values of a/lthe m-value may be varied lin-early. The m-value may also be obtained from Fig.2.

= 160 f 12N/mm (maximum) in general for seagoing con-

ditions = 180 f 1

2N/mm (maximum) in general for harbour con-ditions

= as given in Table A2, but not exceeding the generalmaximum values, for longitudinals within 0.4 L amid-

ships.

For longitudinals between 0.4 L amidships and 0.1 L from theperpendiculars shall be varied linearly.

For longitudinals in tween decks s may be found by interpola-

tion as given for plating in 201.

302 If more than one load area can be positioned simultane-ously on the same stiffener span or adjacent spans, the sectionsmodulus will be specially considered, based on direct stressanalysis.

A 400 Steel girders

401 The scantlings of girders will be especially consideredbased on the most severe condition of moving or stowed vehi-

cles.The vehicle loads shall be taken as:

av = vertical design acceleration for the craftQW = load on wheel group or single wheel in tonnes.

402 The scantlings of girders being part of a complex systemare normally to be based on a direct stress analysis.

403 Girders and stiffeners shall not be scalloped. Doublecontinuous fillet welds are normally to be used between the

plating and the strength member. Chain welds may be acceptedafter special consideration when vehicles are fitted with pneu-

matic or solid rubber tyres.

404 The necessary connection areas between stiffeners andgirders will be specially considered. The shear stresses shallnot exceed 100 N/mm2in the members to be joined and 115 N/mm2 in the weld material.

A 500 Aluminium plating

501 The thickness of aluminium deck plating for wheel load-ing shall not be less than as given in 201 with the allowablestress , given as:

0 = 180 N/mm2(maximum) in general for seagoing condi-

tions= 210 N/mm2(maximum) in general for harbour condi-

tionsf1 = as given in Pt.3 Ch.3 Sec.1 A200 with respect to plate

material yield stress given in Pt.3 Ch.3 Sec.2, TablesB1, B2, B3 and B4.

A 600 Aluminium stiffeners

601 The section modulus of aluminium deck stiffeners forwheel loading shall not be less than as given in 300 with the al-lowable stress , given as:

0 = 160 N/mm2(maximum) in general for seagoing condi-

tions R1-R3= 180 N/mm2(maximum) in general for harbour condi-

tions R1-R3f1 = as given in Pt.3 Ch.3 Sec.1 A200 with respect to stiff-

ener material yield stress given in Pt.3 Ch.3 Sec.2, Ta-bles B1, B2, B3 and B4.

xa

l--, for stiffeners=

Z1000kzl c d p

m-------------------------------- Zk cm

3( )+=

1.15 0.25bs---

for 0.6 < b/s < 1.0

1.15 0.25b

s---

bs--- for 1.0 < b/s < 3.4

r

a

l-- 2

4.7a

l-- 6.5+

----------------------------------------------- fo ra

l-- 1.0

87

a

l--

2 a

l--

2 6.3 a

l-- 10.9+

--------------------------------------------------------------------

for1.2a

l-- 2.5

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