Commercial Maritime

From requirements-driven custom newbuild ship design to upgrades and conversions to meet the latest environmental regulations, a diverse range of clients benefit from our team’s extensive experience.

Vessel Design & Engineering

Longitude has significant experience in vessel design from small craft to specialist offshore vessels.  Our experience crosses all sectors and is based on a full understanding of vessel ownership, specific vessel operations and technical support.

Longitude provides clients with the full range of vessel design, naval architecture, structural engineering, marine system engineering and comprehensive technical support services.

Our naval architecture and support capabilities include:

  • Specialist design of vessels from small craft to ships with unrestricted navigation
  • Hullform and tank testing
  • Performance prediction
  • Seakeeping
  • Concept and detailed design
  • Marine engineering
  • System design
  • Stability
  • Structural design and analysis
  • Regulatory compliance
  • Human factors
  • Production support

Small Craft Procurement

  • Longitude has extensive experience with the procurement of small craft from the perspectives of both owners and potential suppliers
  • In support of vessel owners this includes a craft requirements definition; specification writing; bid evaluation; yard selection; build supervision; trials and acceptance
  • In support of vessel suppliers this includes bid submission writing; product development; technical contract negotiations; and support with contract delivery

Longitude has developed concepts and detailed designs of small craft such as the following:

  • Wind farm support vessels (with a particular focus on daughter boat operations and turbine interactions)
  • Passenger vessels
  • Inshore and offshore rescue boats
  • Work boats
  • Special forces’ rigid inflatable boats
  • Patrol boats
  • High speed interceptor craft
  • Riverine craft and bespoke craft to meet specific roles

Trust Longitude to deliver the small ship design and support services your organisation needs to succeed.

Contact us to discuss your requirements.

Key Contacts

Group Director of Longitude

Exeter, Longitude

View Profile

Managing Director, Longitude USA


View Profile

Managing Director Maritime

Southampton, Longitude

View Profile

Case Studies View All

Hybrid Standby Safety Vessel OSD-IMT951

Principle Characteristics L.O.A.: 50.70 m L.B.P.: 47.40 m Breadth mld.: 13.00 m Depth: 6.00…


Principal Characteristics L.O.A.: 35.92 m L.B.P.: 33.00 m Beam mld.: 8.00 m Depth mld.: 3.80 m Design Draught: 2.50 m Deadweight…


Principal Characteristics Length O.A.: 15.60 m Length B.P.: 15.32 m Beam Mld.: 4.40 m …