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Deck Scupper

Deck Scupper

Deck Scupper is a drainage fitting installed on ship decks to collect and discharge rainwater, seawater, and other liquids from deck surfaces.

Designed for marine and offshore applications, Deck Scupper provides an effective drainage solution by connecting deck drainage areas with discharge pipelines or overboard outlets.

Deck Scupper is commonly installed on:

  • Main decks

  • Weather decks

  • Cargo decks

  • Hatch cover areas

  • Superstructures

  • Offshore platforms

The scupper allows accumulated water to be removed quickly, helping prevent:

  • Deck flooding

  • Water accumulation

  • Corrosion caused by standing water

  • Unsafe working conditions

Overview

Working Principle of Deck Scupper

Deck Scupper works as a drainage outlet that transfers water collected on the deck surface into the ship drainage system or directly overboard.

Operating Process:

  1. Rainwater or seawater accumulates on the deck.

  2. Water flows toward the scupper opening.

  3. The scupper body guides water into the outlet passage.

  4. Water enters the connected drainage pipe.

  5. The drainage system removes water from the vessel.

Main Components of Deck Scupper

ComponentFunction
Scupper BodyMain drainage passage
Inlet OpeningCollects deck surface water
Outlet ConnectionConnects drainage pipe or discharge outlet
FlangeProvides connection with deck or pipeline
GasketEnsures watertight sealing
FastenersFixes the scupper assembly
Coating LayerProtects against corrosion

Applicable Standards of Deck Scupper

Standard CategoryApplicable Standards
Marine Scupper StandardsCBM 1068-81
Shipbuilding StandardsCB/T 3855-2014
Marine FittingsCB/T Series Standards
Flange StandardsGB/T Marine Flange Standards
Material StandardsGB, ASTM, EN, JIS Standards
Classification RequirementsCCS, ABS, DNV, LR, BV

Material Selection of Deck Scupper

MaterialFeaturesApplications
BronzeExcellent seawater corrosion resistanceMarine vessels
Stainless SteelHigh corrosion resistance and clean appearancePassenger ships, offshore vessels
Cast IronStrong and economicalCargo ships
Cast SteelHigh strength and durabilityHeavy-duty applications
BrassGood corrosion resistance and machining performanceSmall drainage fittings
Aluminum AlloyLightweight and corrosion resistantAluminum vessels

Common Material Standards

MaterialStandard
BronzeGB/T 1176 / ASTM B62
Stainless SteelASTM A351 CF8M / EN 1.4408
Cast IronGB/T 9439
Aluminum AlloyGB/T 1173
Carbon SteelASTM A216 WCB

Technical Specifications of Deck Scupper

ItemSpecification
Product NameDeck Scupper
TypeMarine Deck Drainage Fitting
FunctionDeck Water Discharge
MediumRainwater, Seawater, Wastewater
Installation LocationShip Deck, Superstructure, Offshore Structure
Connection TypeFlanged / Welded / Pipe Connection
StandardCBM / CB/T / Marine Standards
Material OptionsBronze, Stainless Steel, Cast Iron, Steel
Surface TreatmentAnti-corrosion Coating / Polishing
ApplicationMarine and Offshore Drainage Systems

Performance Test of Deck Scupper

Test ItemDescription
Dimensional InspectionVerify product size and installation dimensions
Material InspectionConfirm material compliance
Watertight TestCheck sealing performance
Strength InspectionVerify structural durability
Surface InspectionCheck corrosion protection
Final InspectionEnsure shipment quality

Advantages of Deck Scupper

FeatureBenefit
Efficient Drainage DesignQuickly removes deck water
Simple StructureEasy installation and maintenance
Marine Grade MaterialsSuitable for seawater conditions
Multiple Connection OptionsFlexible installation
Durable ConstructionLong service life onboard

Typical Applications

ApplicationFunction
Cargo Ship DeckRemoves rainwater and seawater
Container ShipMaintains dry deck conditions
Bulk CarrierPrevents deck water accumulation
Tanker VesselProvides drainage protection
Passenger ShipImproves deck safety
Offshore PlatformRemoves surface water


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