Our approach to personal consultation is centered around the unique priorities of each stakeholder involved, including the owner, shipyard, yacht manager, and designers. We carefully consider the engine and generator installation and operational requirements, along with anticipated engine running hours and the stringent demands of Classification Societies.
These crucial inputs during the consultation stage ensure that every aspect of the final specification and design is thoroughly understood and met.
From this detailed consultation, we develop a comprehensive timescale, project plan, and design brief tailored to the required system. The consultation process encompasses an array of essential elements including the Halyard scope of supply, identification of detailed system technical specifications, Classification Society requirements, system space parameters, and design, delivery, installation, and launch schedules, among others. This meticulous process ensures every facet of the project is planned with precision.
As we transition from the consultation to the design stage, our team commences the construction of the detailed system layout and design of all associated components. This phase involves continuous close liaison with the customer, addressing any emerging questions related to engine specifics or vessel layout and systems.
The initial system layout agreement marks a critical milestone, setting the foundation for the development of a detailed specification against which the system design is finalised, approved, and manufactured.
The design stage is characterised by a series of intricate steps including the creation of a system general arrangement 3D model, consideration of back pressures and safety, and detailed planning of silencer attenuation and exhaust pipe runs. We pay particular attention to the design and positioning of water injection spray rings, water separation on generator systems, and the inclusion of bypasses for below water outlets.
Our design process also covers silencers, separators, connections, supports and mounts, bellows and hoses, thermal insulation, and SCR/DPF aftertreatment systems, culminating in customer approval and the creation of manufacturing drawings.
Our manufacturing expertise extends to the production of exhaust dry sections, silencers, and water injection spray rings from specialist corrosion-resistant alloys and stainless steels. We utilise specialist GRP for silencers and separators, constructed from filament wound composite tube, and create bespoke exhaust hoses and bellows from either nitrile rubber or silicone, adhering to Lloyd’s approved construction methodologies and ISO 9001:2015 processes.
Our specialist metal fabrication capabilities are underpinned by years of experience in crafting bespoke frameworks and piping systems from high-grade stainless-steel alloys. With comprehensive sheet metal, fabrication, and TIG welding shops manned by skilled professionals, we manufacture most components in-house. For processes beyond our factory’s capabilities, we rely on trusted partners to meet our rigorous standards.
In the realm of rubber and silicone manufacture, Halyard’s expertise spans over 30 years, specialising in the fast turnaround of made-to-order components. Our products, ranging from nitrile and neoprene to silicone and gum stock rubber, meet the most stringent specifications, including Lloyd’s Register type approval for marine exhaust hose and silicone products.
Our extensive experience allows us to work to BS5122 standards for railway low and medium pressure saturated steam, as well as to bespoke customer requirements.
Our composites manufacturing capabilities, honed since 1992, encompass filament winding, wet layup of sheet and moulded forms, and hand lamination of components. This broad spectrum of expertise enables us to produce everything from small two-piece assemblies to highly complex assemblies, ensuring the highest quality and precision in every project we undertake.
