GUIDANCE MANUAL for TONNAGE SURVEYS of VESSELS up to 24 Metres (LENGTH)

International Institute of Marine Surveying

GUIDANCE MANUAL FOR TONNAGE SURVEYS OF VESSELS UP TO 24 Metres (LENGTH)

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Contents

Page 3 Introduction Page 4 Who can undertake Tonnage Surveys through the IIMS? Page 5 Tonnage survey process Page 6 Tonnage Survey process Information required for completion of the certificate of survey. Name of ship UK Ports of choice Page 7 Tonnage Survey process Other Red Ensign Flags Official number HIN/CIN Year built Page 8 Tonnage Survey process Type of ship Ship power Builder’s name and address Construction material Date of survey Place of survey Measurement interpretations Definition of Length Overall Page 9 Diagrams of LOA aft and forward measurement points Definition of Length Definition of Breadth Page 10 Breadth Diagrams Definition of Depth Page 11 Definition of Depth continued. Depth diagrams Page 12 Depth lower terminal points and diagrams Page 13 Break definition and example diagrams Page 14 Multihulls and Breaks definition including example diagrams Page 15 Multihulls and Breaks definition including example diagrams continued Page 16 Rigid Inflatables (RIB) and diagram Page 17 Tonnage calculations Measurer’s contact details Particulars of propelling engines Page 18 Suggested equipment for carrying out a Tonnage Survey Further advice Page 19 Appendices Appendix 1 The Merchant Shipping (Tonnage) Regulations 1997 Appendix 2 MGN 527: Tonnage Measurement Clarification of Procedures for Multihulls

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Introduction

The IIMS CA (Certifying Authority) is approved by the MCA to undertake Tonnage Measurements on vessels of up to 24m ‘Length’ for British Registration. Note that the Length Overall (LOA) may be over 24m.

The statutory instrument for guidance is;

The Merchant Shipping (Tonnage) Regulations 1997 Statutory Instrument No. 1510

See Appendix 1 for a copy of the SI. Definitions used in this manual are taken from the SI.

In addition to British Registration, the IIMS CA is also approved by a number of other Red Ensign Flag States as follows;

Jersey – Vessels less than 24m length Guernsey – Vessels less than 24m length Isle of Man – Vessels less than 24m LOA BVI – Vessels less than 24m load line length Cayman Islands – Vessels less than 24m load line length

Most of these Flag States have different methods of measurement and/or information’s that are to be included on their forms compared with the British requirements. You should therefore make yourself familiar with the requirements of each Flag State prior to undertaking that Flag States survey.

All current Tonnage Survey Forms for each Flag State are available to download at;

www.iims.org.uk/vessel-coding/certifying-authority-examiner-resources/

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Who can undertake Tonnage Surveys through the IIMS?

 You must be an IIMS Associate or Full Member.  Applications for approval are to be made to the Certifying Authority  Applicants need not be a Certifying Authority Surveyor for MCA Coding but may be approved as a CA Tonnage Surveyor only.  To apply please contact the IIMS CA Administrator for an application form: [email protected]

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Tonnage Survey process

 Client contacts IIMS CA or Surveyor and requests a Tonnage Survey.  Surveyor carries out Tonnage Survey using either; ‘UK Certificate of Tonnage Survey’ forms or other Flag State forms as found under the CA Membership section of IIMS website. http://www.iims.org.uk/vessel-coding/certifying-authority-examiner-resources/  Surveyor is to complete the forms as stated in this manual.  Surveyor sends original documents (Application and tonnage Survey) to IIMS HQ along with application fee. Currently (November 2016) this is £85 for UK and £105 for all other Flag states. To expedite the process it is a good idea to send an email copy of the survey for scrutineering prior to sending the original Tonnage Survey documents to [email protected]  The documents are then sent out by the CA department to a scrutineer. On approval the original is signed and stamped and the original documents are sent to the relevant Flag State registry.  Once the Tonnage paperwork meets up with the Registration documents and all is approved, the Registry will issue a Carving and Marking Note. For pleasure vessels the C&M can be signed off by the vessel owner.  For Commercial Vessels, the C&M requires to be signed off by a Surveyor after re-visiting the vessel. The Original C&M should then be sent either into the CA for ‘stamping’ prior to sending on to the Registry or directly to the Registry by the Surveyor.

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Information required for completion of the certificate of survey

All information should be Typed / Hand written in BLACK ink with BLOCK CAPITALS.

Measurements should be in metres to 2 decimal places. e.g. 13.56 not 13.6

Tonnage should be to 2 decimal places. e.g. 22.49 not 22.5

Figures for measurement and tonnage should be rounded up or down to the nearest one hundredth. e.g. 22.495 = 22.50 or 22.494 = 22.49

NAME OF SHIP To be entered exactly as it appears (or will appear) on the vessel. Do not use ‘Quotation’ marks or any other surplus punctuation marks.

UK PORTS OF CHOICE Use one of the following for British registration;

Aberdeen Dartmouth Kirkwall Preston Aberystwyth Dover Lancaster Ramsgate Alloa Dumfries Leith Rochester Arbroath Dundee Lerwick Runcorn Ardrossan Exeter Littlehampton Rye Ayre Falmouth Liverpool Salcombe Banff Faversham Llanelli Scarborough Barnstaple Felixstowe London Scilly Barrow Fleetwood Londonderry Shoreham Beaumaris Folkestone Lowestoft South Shields Belfast Fowey Maldon Southampton Berwick on Tweed Fraserburgh Manchester St Ives Bideford Glasgow Maryport Stockton Blyth Gloucester Methil Stornoway Borrowstoness Goole Middlesbrough Stranraer Boston Grangemouth Milford Haven Sunderland Bridgewater Granton Montrose Swansea Bristol Great Yarmouth Newcastle Teignmouth Brixham Greenock Newhaven Troon Buckie Grimsby Newport Truro Burntisland Hartlepool Newry Weymouth Caernarvon Haerlepool West North Shields Whitby Campbeltown Harwich Padstow Whitehaven Cardiff Hull Penzance Wick Cardigan Inverness Peterhead Wigtown Chester Ipswich Plymouth Wisbech Colchester Irvine Poole Workington Coleraine Kings Lynn Port Talbot Cowes Kirkcaldy Portsmouth

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OTHER RED ENSIGN FLAGS The ports of choice may be as follows;

FLAG STATE PORT OF CHOICE PORT OF CHOICE PORT OF CHOICE PORT OF CHOICE

JERSEY JERSEY

GUERNSEY GUERNSEY

ISLE OF MAN CASTLETOWN DOUGLAS PEEL RAMSEY

BVI GORDA SOUND ROAD HARBOUR WHITE BAY

CAYMAN ISLANDS BLOODY BAY GEORGE TOWN THE CREEK

OFFICIAL NUMBER: The official number from any previous registration.

HIN/CIN: The HIN (Hull Identification Number) or CIN (Craft Identification Number) should consist of 14 consecutive characters visible on the starboard outboard side of the transom, or near the stern within 50mm of the transom top, gunwale, hull/deck joint or its capping, whichever is lowest.

Example; FR–SPBDB430 G617

FR = COUNTRY CODE (FRANCE) SPBDB = MANUFACTURERS CODE 430 = HULL or MANUFACTURERS NUMBER. G6 = MONTH & YEAR HULL MOULDED A = JANUARY B = FEBRUARY, C = MARCH ETC. THIS ONE IS JULY 2016 17 = MODEL YEAR …2017

YEAR BUILT: Only the year built should be shown. This is not the model year, see example above for vessels with HIN / CIN numbers. E.g. Enter as 2016 not 16 or 6.

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CONSTRUCTION MATERIAL: Enter one of the following; WOOD. STEEL. GRP. FRP. ALLOY. CONCRETE.

TYPE OF SHIP: Enter one of the following; SAIL. MOTOR. SAIL & MOTOR. DUMB.

SHIP POWER: SAIL. STEAM. MOTOR. OUTBOARD.

If the vessel has two forms of propulsion e.g. Sailing vessel with auxiliary engine, both SAIL and MOTOR should be circled.

OPERATION:

For a non-commercial vessel it should be ticked PLEASURE.

For commercial vessels the type of ship should be ticked COMMERCIAL.

BUILDER NAME & ADDRESS: Enter name and address of builder. If the vessel has been moulded/built by one builder and fitted out by another, enter the names of each 1. BUILDER: 2. OUTFITTER:

MEASURERS NAME, ADDRESS, PHONE NO. & SIGNATURE:

Give full details including country code if outside the UK.

DATE OF SURVEY: Enter DD/MM/YYYY that the measurement was carried out. e.g. 21/02/2016

PLACE OF SURVEY: Enter town only. e.g. Chichester not Chichester Marina. If outside of the UK then include Country e.g. Antibes, France. Not Antibes.

Measurement interpretations

LENGTH OVERALL Means the distance between the foreside of the foremost permanent structure and the afterside of the aftermost permanent structure.

Moulded bathing platforms etc. that form part of the hull structure and are open to the main hull should be included. Bolt on platforms, bowsprits etc. should not. A good rule of thumb is, if the appendage was removed would it leave a large hole to the hull. If the answers YES then it should be included.

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Aft Measurement Point Forward measurement point.

LENGTH Means the greater distance of the following distances;

(a)the distance between the fore side of the stem and the axis of the rudder stock; or

(b)96 per cent of the distance between the fore side of the stem and the aft side of the stern; the points and measurements being taken respectively at and along a waterline at 85 percent of the least moulded depth of the ship. In the case of a ship having a rake of keel the waterline shall be parallel to the designed waterline;

The LENGTH should be given for all vessels that have a LENGTH OVERALL of 24m or over.

BREADTH the breadth shall be its extreme breadth over the outside plating, planking or hull, no account being taken of rubbers or fenders even if they are moulded so as to be integral with the hull. The extreme breadth is not necessarily the midpoint of the length overall.

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DEPTH the depth of a ship shall be measured vertically at the midpoint of the length overall.

(i)The upper terminal point for depth shall be—

(aa) In the case of a decked ship, the underside of the deck on the middle line or, if there is no deck on the middle line at the point of measurement, the underside of the deck at the side of the ship plus the full deck camber;

(bb) In the case of an open ship, the top of the upper strake or gunwale.

(ii) The lower terminal point of depth shall be—

(aa) In the case of a wooden ship, the upper side of the plank at the side of the keel or hog;

(bb) In the case of a metal ship, the top of the plating at the side of the keel;

(cc) In the case of a glass reinforced plastic ship, the inside of the hull. Where no keel member is fitted and the keel is of open trough construction, the lower terminal point for depth shall be the

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top of the keel filling, if fitted, or the level at which the inside breadth of the trough is 10 centimetres, which ever gives the greater depth.

(iii) Where a break exists in way of the point of measurement for depth, the height of the break shall not be included in the measurement of depth.

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Where tanks are fitted immediately below the lower terminal point of depth, and even if the tanks are glassed in, the depth dimension should be taken as though the tanks were not in that position i.e. Dimension A in the diagram below. If the surveyor is unable to take this dimension then an educated assessment should be made.

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BREAKS A BREAK is defined as a full side to side (bounded by the sides of the vessel) upward step in the lowest line of the ‘upper deck’.

The Mean length, Mean breadth and Mean height of the Break/s are multiplied by 0.35

If more than one break exists, each break should be entered separately.

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MULTIHULLS In the case of a multihull vessel the tonnage of each hull shall be measured separately and the sum of both shall be used in calculating the tonnage.

Hull Definition

A cross deck structure between the hulls below the weather deck does not constitute a ‘break’ and should not be included in the calculations.

Cross Deck Structure between hulls

A deck house that does not extend from side to side is not considered to be a ‘Break’.

Deckhouse not extending side to side

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A deck house or structure that does extend from side to side but has a deck underneath the structure is not a ‘Break’.

Side to Side Step with deck underneath.

A side to side upward step where the openings into each hull are open and not closed off by a deck between, are considered to be a ‘Break’

Side to Side Upward Step Constituting a Break.

See MGN527(M) For detailed explanation.

RIGID INFLATABLES (RIB)

Rigid Inflatables shall be measured to the extremity of the inflatable sponson. This shall include where the tubes extend beyond the rigid part of the hull.

The vessel should be measured with the sponsons inflated to their usual working pressures under normal conditions.

As with measuring conventional hull forms, the fendering that is often glued to the sponsons shall not be included in the measurements, nor would a stainless ‘A’ frame at the stern of the vessel (as it falls under the definition of ‘non fixed permanent structure’)

TONNAGE CALCULATIONS

The Tonnage figures are given in TONS.

The hull/s tonnage is Length x Breadth x Depth x 0.16 = TONS

The Breaks are Mean length x Mean Breadth x Mean Height x 0.35 = TONS

Add both together to give the Gross and Net Tonnage in TONS. Round up or down to 2 decimal places on the calculation page and front page of the survey. Both figures should match.

Other Flag States may require the Tons in Cubic Metres. If required, multiply the sum of Tons x 2.83.

PARTICULARS OF PROPELLING ENGINES

NUMBER OF SETS OF ENGINES: Enter one of; ONE. TWO. THREE. FOUR. Not 1,2 etc

ENGINE MAKE: Name of engine manufacturer e.g. YANMAR.

ENGINE MODEL: Model of engine e.g. 6LY3-STP (always put full model code)

RPM: Rated RPM e.g. 3200

NUMBER OF CYLINDERS: This is for one engine e.g SIX

MAXIMUM CONTINUOUS ENGINE POWER (MCEP): This figure can often be obtained from the manufacturer or from the owners handbook. It is generally not shown on the engine plate. e.g. the YANMAR 6LY3-STP shows maximum output of 440hp (324kw). The MCEP of this engine is 400hp (295kw).

Enter; 400hp 295kw for a single installation.

If twin engine installation the figure should be the sum of BOTH engines e.g. 800hp 590kw

Suggested equipment for carrying out a Tonnage Survey.

 Tonnage Survey forms and notebook  Digital camera  Tape measures – 1 x 30m Surveyors tape reel, 1 x 10m tape Measure  Plumb bobs on long lanyards x 4 for when vessel is out of water.  Spirit level and straight edge  Non marking masking tape  Calculator

Further advice

REMEMBER, if you are unsure, phone IIMS HQ and a member of the staff will put you in touch with someone who can help.

Contact details:

Telephone + 44 (0) 23 9238 5223

Email: [email protected]

Web: www.iims.org.uk

Acknowledgement

The International Institute of Marine Surveying would like to thank John Excell FIIMS, Chairman of IIMS Large Yacht & Small Craft Working Group and a member of the IIMS Certifying Authority for his work in putting together this Tonnage Guidance Manual.

APPENDIX 1

The Merchant Shipping (Tonnage) Regulations 1997

APPENDIX 2

MGN-527.-Tonnage-Measurement.-Clarification-of-Procedure-for-Multihulls-under-24m-load-lin e-length