TAI EnviroMax™©  Series

Enviromax ™ 300’ Offshore Supply Vessel – Harvey Hawkharvey Condor (6)


TAI EnviroMax™©  Series

  • TAI Engineers, LLC first introduced its TAI EnviroMax 300™© Deepwater Oil and Gas Support Vessel (OSV) in 2010. Since then, TAI has expanded the TAI EnviroMax ™©  vessel series to include a multitude of different vessel sizes and missions ranging from PSV, MPSV, Oil Spill Response, Fast Bunkering, Container Vessel Support, Windfarm SOV, Arctic Oil Spill Response, and Research Vessels.
  • Over twenty (20) TAI EnviroMax™©  programs have been contracted for design and construction. These different variants of the TAI EnviroMax™© resulted in 12 constructed vessels delivered between 2012 through 2023.
  • These vessels are unique compared to the existing vessel fleet as they were designed specifically to be more environmentally friendly as well as designed for maximum mission capability and deadweight.
  • The TAI EnviroMax™© series was conceived to be flexible and adaptable for many missions to bring the same environmental, maximum mission capabilities, deadweight, and speed benefits to a variety of other vessel classes.

TAI EnviroMax™© Series Enhancement Goals

  1. Maximize mission capability and dead weight and mix of cargo-carrying capability in the hull envelope.
  2. Maximize the vessel’s speed using the application of traditional cargo ship design principles to allow the vessel to provide maximum cargo on location on an annualized basis with the maximum turnaround trips due to the increased vessel speed.
  3. Maximize the sea state in which the vessel can operate and dynamically position. This provides the charterer with maximum cargo on-site in a particular geographic area and the Owner a competitive edge.
  4. Minimize the installed propulsion BHP in order to minimize the annual fuel consumption and carbon footprint emission.
  5. Minimize the environmental impact by making the design conform to ABS Green Passport, and IMO, MARPOL, and SOLAS requirements to obtain ABS Enviro notation on its certificate.
  6. Minimize the vessel operating expenses using design techniques
  7. Minimize the vessel construction costs using the newly developed and proprietary and copyrighted structural method so that the design can be built and maintained competitively.
  8. Maximize Flexibility: Enhanced and more capable oil spill response capability in this TAI EnviroMax™© design series also has the flexibility so that it can be readily adapted to Oil Spill Collection functions.

Maximizing Usable Hull Volume:

TAI has developed a new ratio called the usable hull volume ratio. It is the ratio between a cargo space to a total hull volume space.

  • for 13 different classes of OSV vessels whose data is publicly available this ratio is ranging between 0.47 to 0.68
  • Whereas, for TAI EnviroMax 300™© OSV the usable hull volume ratio is 0.71 – which is the highest of similar vessels existing so far

Another achievement is an optimal balance between minimum hull resistance and maximum deadweight. Which is expressed as:  (DWT x 35) / (LxBxTxCb)

  • This number in the 13 leading market classes of OSV designs ranges between 0.53 to 0.58.
  • The attained number on TAI EnviroMax 300™ ©  OSV is 0.60.

Extensive CFD analyses, resistance analysis and optimization were performed to optimize the WAKE FLOW Characteristics, Hull shape and Bulbous bow.

Hull form: Overall hull performance has been optimized by minimizing wave resistance. In doing so, an advanced bulbous bow has been included. Further refinement of hull lines resulted in net reduction in wave resistance by 30%. In practical terms, this means more speed or lower fuel consumption.

The resultant design is one of the lowest propulsion power to full load displacement ratio (for the same speed).

The 13 existing leading designs had a range of 0.61 to 0.71 kW / L.Tons displacement.

Whereas, the TAI EnviroMax™ © Series attained a ratio of 0.58 kW / L.Tons.

Cfd Analysis (during Initial Design)

TAI EnviroMax™©  Variants

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