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IN BRIEF
Buy the panel, penetration detail and finished supply as one file
A marine component needs a panel that meets the project requirement and a completed detail that can be reproduced. Identify the exact construction, map outside edges and openings, coordinate the coating and fittings, then compare offers at the same delivered stage. Keep the local assembly trial with the drawing and actual material model.
- Map every penetration and exposed edge.
- Use the selected coating and hardware instructions.
- Retain access for inspection or future replacement where the design requires it.
Before preparing the coating detail, use the marine versus exterior plywood comparison to review the panel designation, veneer construction and bond information with the drawing.
UNDERSTAND THE DETAIL
Does marine plywood mean the finished component is waterproof?
No. Marine plywood’s bond and construction do not make an unprotected finished component waterproof. Choose the marine panel and plan the finished boat component together. Include exposed edges, holes, joints, coatings and fittings so the assembled part suits its working environment.
Request the marine grade, applicable standard, veneer construction, bond data and dimensions. Add the coating, adhesive and hardware you plan to use. APA’s plywood guidance explains bond exposure performance; plan decay protection through the complete finish and maintenance detail.
- Panel requirement
- Specified construction, dimensions and applicable product documentation.
- Assembly requirement
- Edges, joints, penetrations and the builder’s accepted detail.
- System requirement
- Compatible coating, adhesive or hardware instructions for the chosen components.
Should holes be drilled before or after coating?
The accepted assembly sequence should identify that decision. If a hole or cut is introduced after the original coating work, review how the new exposed area will be treated under the selected system. Keep the revised location on the drawing so it is included in the component check.
Continue with connecting an accepted component sample to its panel.
Reference: APA: product and exposure questions.
See APA’s plywood bond-classification guidance for that distinction. Request the actual marine construction and project records from the offered supplier.
Choose the complete construction and delivered stage
Send the component duty, drawing revision and material requirement together. A familiar species or nominal gauge is useful for shortlisting; the offer should identify the actual veneer schedule, supplied dimensions and relevant standard/data for the complete panel. Discuss an alternative as a separate model with its own component review.
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| Item | Record or calculate | Order decision |
|---|---|---|
| Panel model | Required marine designation/standard/edition/class, offered model/lot, face/back/inner species, veneer gauges and lay-up, measured dimensions and applicable bond/property methods and results. | Match the proposed construction and thickness scope to the project, including any builder-required additional records. |
| Part and datum | Part code, revision, units, front/reverse, grain/material direction, finished outline/limits, holes and profiles from a stable origin. | Identify the stage at measurement and whether machining or coating changes the finished fit. |
| System products | Actual coating/resin/adhesive and finish references, substrate/preparation compatibility, manufacturer instructions and fitting model. | Agree the products and current process requirements for the complete local detail. |
| Operations and custody | Who cuts, drills, prepares, coats, installs fittings and completes final work; inspection points, batch references and later modifications. | Price the same delivered stage and keep freshly exposed edges/openings in the process record. |
| Trial and repeat supply | Representative corner/opening/fitting, actual system and sequence, required evaluation, part/pack labels, selected spares and drawing changes. | Retain a reproducible finished reference and its full material/process identity for the order. |
Identify the places that interrupt the coating
Mark service holes, fasteners, cut-outs and joints on the component drawing. State which operations happen before coating and which may be performed later. A newly drilled hole needs to be considered within the agreed protection and hardware detail.
Choose the resin or coating system with the builder and follow its manufacturer’s instructions. WEST SYSTEM provides guidance for bonding fasteners and hardware; use the dimensions, mix and curing schedule specified for your chosen system.
Trial the complete local detail
Choose a sample that contains the most demanding penetration or corner and the actual hardware where practical. Record panel identity, preparation and system references. Review the completed detail using the evaluation required for that component.
Keep any change to a fitting, coating or assembly sequence visible. If maintenance access matters, include it in the drawing review. The finished sample should explain how the accepted arrangement will be reproduced, inspected and discussed if a later repair is needed.
Make every exposed surface visible to the coating team
Use separate identifiers for the outside edge, service opening and fitting. A plan view locates the feature; a section shows the exposed material and coating/hardware interface. State whether the drawing describes a raw cut, prepared opening or completed assembly.
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| Item | Record or calculate | Order decision |
|---|---|---|
| E01 outside perimeter | Profile, corners, edge length, full section, preparation and final coating/edge detail. | Check both faces and the complete edge at the supplied stage; record any later trimming. |
| H01 service opening | Datum/coordinates, opening profile/dimensions, wall section, collar/grommet/fitting and access. | Trial the actual local treatment and completed fit using the selected system instructions. |
| H02 fixing location | Actual hardware, hole/profile, bearing/contact faces, mounting method and design requirements. | Keep the builder’s accepted fixing detail and manufacturer’s bonding/installation instructions with the part. |
| R01 later change | New hole, recut, fitting or finish change with drawing issue, exposed substrate and remaining work. | Update the part/process file and relevant local trial before releasing the changed component. |
WEST SYSTEM’s hardware-bonding guidance describes distinct methods for its epoxy and hardware arrangements. Use the actual selected product instructions and required load/detail review to choose the process; retain access and removal requirements when they affect the assembly.
WORKED BUYING EXAMPLE
Example: a coated locker panel with two penetrations
Chosen locker component record connecting openings, fittings and the supplied finishing stage.
Give the service opening and hardware fitting their own IDs on the current drawing. Record the actual location, profile, exposed material, fitting reference and coating sequence for each.
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| Item or observation | Record or compare | Next decision |
|---|---|---|
| Service opening | Cut outline, exposed edge and selected coating detail. | Confirm the sequence with the builder and coating guidance. |
| Hardware fitting | Actual fastener and mounting arrangement. | Review the applicable hardware and bonding instructions. |
| Later modification | A new hole is requested after approval. | Update the drawing and protection detail before processing. |
What this means for the order
The purchasing record should connect the chosen plywood construction with the accepted component drawing. Coating or hardware changes need their own review even when the underlying sheet specification remains the same.
FACE / EDGE / OPENING
List the surfaces that need coating
Chosen geometric inputs: one rectangular locker part 1000 × 500 × 18 mm, with two straight circular through-openings of 40 mm and 20 mm diameter. Count both broad faces, all four outer edges and both opening walls. The part has no chamfers, recesses or added profiles in this calculation; the actual drawing and finishing stage determine the surfaces for an order.
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| Item | Record or calculate | Order decision |
|---|---|---|
| Two broad faces | 2 × [1.0 × 0.5 − π × (0.02² + 0.01²)] = 0.996858 m². | Subtract each opening from each face; record which faces the proposed finishing scope includes. |
| Outside edges | 2 × (1.0 + 0.5) × 0.018 = 0.054000 m². | Include the full perimeter section, subject to the actual profile and subsequent machining. |
| Opening walls | π × (0.04 + 0.02) × 0.018 = 0.003393 m². | Keep each through-wall in the preparation/coating record and trial. |
| Complete geometric area | 0.996858 + 0.054000 + 0.003393 = 1.054251 m² before any actual profile changes. | A quotation measured only by the 0.500000 m² front face covers a different quantity basis. |
Use the quantity unit on the product quotation
For a product expressed in litres per square metre per application, calculate area × its applicable consumption × the specified applications. For a product expressed in square metres per litre, calculate area ÷ its applicable coverage × the specified applications. Record which coat or preparation stage each figure covers and include the actual process loss or pack rounding separately.
Apply the manufacturer’s current substrate, preparation, film/build, curing and overcoating instructions to the selected system. Hardware bedding or bonded joints have their own quantity and detail; keep them separate from this face/edge coating area. The geometry supplies a quantity comparison, while the builder and system requirements establish the completed process.
Compare raw panels with the completed component
Use the same part schedule and accepted construction for both offers. Record supplied operations and the work that remains in the receiving workshop. Calculate the total against the required usable finished quantity, including chosen reserve positions.
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| Item | Record or calculate | Order decision |
|---|---|---|
| Full sheet supply | Actual format/gauge/model, sheet allocation, selected material, delivery and packing; remaining cuts, holes, edge preparation and coating. | Include the workshop’s relevant labour, consumables, trial and handling in the same component-cost calculation. |
| Prepared parts | Finished cut/boring/profile limits and measurement stage, grain direction, labels, protection and remaining coating/fitting work. | Identify exactly which surfaces and machining operations are completed before receipt. |
| Finished components | Actual system/process file, complete face/reverse/edge/opening scope, fitting trial, finished fit, inspection and pack sequence. | Compare per complete accepted component/set, including excluded fittings or installer operations and agreed replacements. |
Keep quotation currency, validity, quantities, chosen spares, price unit, named FOB/CIF port, pack weights/dimensions and receiving requirements aligned. For a new component, agree the material and local assembly trial before scheduling repeat production; the stated panel lead time and the actual machining/finishing scope belong in the offer.
Make the marine inquiry specific to the component
Send the intended marine use, required panel standard, thickness and sheet format, core or lay-up requirement and documents needed by the project. Ask CUZI to identify the offered construction and provide the information relevant to that requirement.
Use a penetration map in the sample brief
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| Detail | Record | Trial decision |
|---|---|---|
| Cut edge or corner | Profile, coating system and preparation sequence. | Review the completed edge with the builder. |
| Service opening | Position, exposed material and any access requirement. | Confirm its treatment under the selected system. |
| Fitting | Hardware model, fixing location and assembly method. | Trial the actual local arrangement and retain its drawing. |
CUZI quotes FOB or CIF and can combine panel items in a container order. List the quantity and destination with your component brief, and request the sample needed to resolve the panel selection before ordering.
Send the complete part and process brief
Start with the current drawing and required panel model. Include the penetration map, actual system/fitting references, supplied finishing stage, finished fit and trial requirements. CUZI will discuss the material and processing scope against that file.
Keep these details with your inquiry
- Component duty and specified plywood construction.
- Penetration map, edges and joint details.
- Coating and hardware product references.
- Accepted assembly sample, sequence and maintenance requirements.
Review the relevant product guide and prepare your inquiry files.
Questions buyers ask
Does marine plywood remove the need to detail holes?
No. Holes, joints and exposed edges remain part of the boat component’s protection detail. Choose the coating and hardware arrangement for your component, following the selected system’s application instructions.
Can a general coating sample approve a fitting detail?
No. A broad-face coating sample does not demonstrate the protection and fit around a penetration or fitting. A broad-face sample answers only part of the question. Include the penetration or fitting that determines the local assembly decision.
Which surfaces should a finishing quote include?
Specify face, reverse, outside edges, opening walls, routed surfaces and any hardware interface by drawing ID. State the operations and completed stage that the supplier is pricing.
Can the broad-face area be used as the whole coating quantity?
No. Coating quantities must also include the reverse, edges, cut-outs and other treated surfaces. List the actual faces, profiles and opening walls first. Apply the relevant manufacturer consumption or coverage by coat/stage, then record actual loss and pack rounding separately.
How should a hole added after finishing be handled in the order?
Record the new location, exposed material and changed fitting/process detail on the current issue. Coordinate its treatment and trial under the selected system before the repeated component is released.
What should remain with a repeat component order?
Retain the full panel model, drawing/penetration revision, system/fitting references, completed local trial, process and inspection stages, fit record and part/pack labels. Review a changed construction or process as a separate item.
