Services

We work with you to come up with the best solutions to your challenges.

H2NA is always willing to discuss your specific needs regardless of size, please feel free to approach either of our company directors using the Contact Us page for any Naval Architecture requirement you may have. The following list summarises H2NA's current experience. Individual requirements can be accommodated so please do not hesitate to contact us should your specific need not be covered below.
Stability Analysis 
H2NA is proficient with the following:
• Calculation of Hydrostatics
• Compliance with Class and Flag Requirements
• Intact Statical Stability Assessments
• Deterministic Damage Stability Assessments
• Probabilistic Damage Stability Assessments
• Production of Critical KG Curves
• Production of Damage Stability Templates (Mode of Loss / Carpet Plots)

Inclining Experiments and Displacement Checks
Extensive experience inclining both Commercial and Naval vessels makes H2NA the perfect choice to conduct an Inclining Experiment or Displacement Check. The company is able to provide full management of this vital activity (planning, liaison with all parties, conduct of experiment, results calculation, submission for Class/Flag approval) or simply provide additional resources to support your own team as required.
Additional services such as:
• Liaison with Classification Societies / UK MCA
• Ship growth management can also be provided.


Refit Support
Our staff are qualified to and experienced at providing Naval Architecture support before, during and after ship and large boat refits. Regardless of whether your requirement is to manage a multi-million pound major ship conversion or a re-certification and cosmetic upgrade our team stands ready to support your company deliver a successful project.

Stability Information Books
H2NA staff have extensive experience (since 1996) and success with the creation and modification of a wide range of ship Stability Information Books (SIB's). Documentation has been approved by Lloyd's Register of Shipping (LR), Maritime & Coastguard Agency (MCA) or other MGN280 Certifying Authority (i.e. MECAL, SCMS) as necessary. The generation or update of this key ship document is part of our core business and can be completed either as a stand-alone task or as part of a wider stability analysis. Good working relationships with the UK regulatory authorities and a thorough understanding of their requirements enables H2NA to complete such tasks to demanding timescales.


Alterations and Design Changes
With years of experience of both the naval architecture aspects and project management of large design changes on a range of commercial ships and Naval warships, H2NA is well placed to support any in-service design changes required during a ships' life. 


Feasibility and Design Studies
Significant practicing experience in the field of Naval Architecture has provided H2NA with the breadth of knowledge required to undertake a wide range of Naval Architecture assessments against a diverse set of customer requirements. Using our Project Management expertise we can support your ship design projects from concept through to disposal.
Surveys
Independent material state verification inspections can be carried out including, but not limited to, the following:
• Watertight Integrity Surveys
• Downflooding Point Surveys
• Safety Equipment Plan Approval Surveys
• Escape Plans – Development and/or audit to approved plans
• Valuations and support with sale or purchase agreements
• Laser Mapping


Support to Future Defence Concepts




Local Structural Design and Analysis
An in-depth knowledge of structural assessment techniques and computer tools provides H2NA with the skills necessary to design or modify ship structure. This work can also be submitted to Lloyds Register for Plan Approval depending on your specific needs. 



Workboat Code Implementation and Compliance
H2NA specialises in understanding, advising and implementing workboat code to ensure your vessel is operated safely. (https://www.gov.uk/government/publications/workboat-code)



Naval Architecture Documentation
H2NA can create, update, or audit any Naval Architecture documentation, including specification and requirements writing, Life Saving Appliance Plans, Safety Plan, Fire Control Plans. 

Other Services Available:
Ship Trials  |  Model Trials  |  Computer Loading Instruments  |  Vessel Valuations
Flight Deck Design and Analysis  |  Ballast Water Management Plans  
Laser Scanning  |  Ultrasonic Thickness Measurements  |  Operational Loading Limit Envelopes Towing and Docking Calculations

Project Examples

Al Avocet Refit

H2NA provided Naval Architecture support for the 100m Hopper Dredger, Al Avocet, in her 30 year refit period. Work involved a number of engineering design changes, laser scan, MaxSurf model creation, incline experiment, stability analysis. A new Stability Information Book and drawings were produced. 

Extra Information

Defence - H2NA have a combined experience of over 40 years working with the UK Ministry of Defence focusing on both commercial and large naval vessels. This has provided a thorough understanding of the requirements of MoD Naval Authority, LR and MCA rules and regulations.

Independent Audit - Chartered Engineers registered with UK Engineering Council and Members of RINA provides your company with the assurance of a professional, independent and commercially discrete service.

Drawing Office - Our drawing office is equipped with the latest equipment and software with skilled operators capable of creating or modifying customer drawings as required. 

Class / Flag Approval - H2NA regularly liaises with MCA, LR, DNV.GL & BV Surveyors. Should your requirement necessitate it, we are able to develop relationships with any member of IACS. We also maintain constant working relationships with other Certifying Authorities (UK & Europe) acting on behalf of Flag.

Customer Support - If your company either doesn't have its own Naval Architecture expertise or wishes to temporarily increase its numbers or experience, H2NA is able to provide support to a wide range of requirements on an ad-hoc or more permanent basis. Support can also be provided with tasks ranging from requirements definition through to evaluating tender responses or design solutions.
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