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MARITECH Corporation designs and engineers marine vessels for diverse
government, commercial and private maritime applications. Many
utilize advanced catamaran, Small Waterplane Area Twin Hull (SWATH) and
Surface Effect Ship (SES) technology to enhance their performance and
operational capabilities. Others address unusual applications of
conventional hull forms where transportability
and/or operational constraints were paramount requirements. The
expertise
of our principals and associates has been hands-on concerning these
technologies ranging from initial concept formulation and design
development to port
and flag state certification, in-service operations and maintenance.
- Hydrodynamic performance to reduced drag and motions
- Propulsion machinery installation and arrangement
- Cost to build
- Oceanographic Research Ship fitted out for open-ocean marine research and deep-sea exploration in rough sea conditions
- Coastal/Offshore Law Enforcement, or hydrographic survey and ROV/AUV support
- Harbor Patrol or Pilot Service
- Cruise Ship for service to out-of-the-way ports-of-call or adventure tours to stormy northern or southern latitudes
- Casino Ship for same-day cruise to nowhere or round trip service to nearby domestic or international ports-of-call
- Dinner Cruise r with generous facilities for training seminars, corporate meetings and private receptions
- Passenger Ferry designed for scheduled operations in waters subject to rough sea conditions
- Cargo Transporter for the collection and shipment of high-value fisheries products worldwide
- Tuna Seiner longliner
- Luxury Yacht for private ownership or vacation charter operations with a professional crew
Special Purpose Vessels
In support of swamp/shallow water off-shore oil exploration interests, MARITECH Corporation has developed a design for a pusher tug capable of operations in extremely shallow water depths. The vessel was configured featuring modular hull and deckhouse elements that were specifically designed for rapid assembly/dissassembly and easy transport by air, rail, road or ship carrier to any part of the world. MARITECH Corporation has also developed a design for an oil-skimmer that is transportable without special permits via trailer on public roads and highways. The skimmer is capable of high-speed transit to a distant spill site and the recovery of 1,000 gallons of light to heavy oils and contaminated debris.Luxury Yachts
Maritechs 65 ft. luxury yacht design is based on monohull platform. The concept design is based on meeting applicable safety in design criteria, including UK's MCA regulations on subdivision and stability. Many so-called luxury yacht builders have routinely neglected to incorporate this factor in their designs which become a burden to owners at the time of re-sale of the vessels or re-assignment for charter operations in caribbean or Bahamas waters. Interested parties, please contact Maritech Corporation for more detail.Landing Craft Style Workboat
Maritech's 28 ft. landing craft style work boat design is available for building. The boat features a 20 ft. long x 9 ft. wide working deck with, a bow ramp, and a 2-man wheel house. The propulsin system configuration is based on 130 HP outboard motor. Interested parties, please contact Maritech Corporation for more detail.SWATH Technology
SWATH is an accronym for Small Waterplane Area Twin Hull. This technology benefits owners and operators by significantly improving a vessel's ride quality (roll, pitch and heave motions) and speed - performance in open ocean compared to other hull types. An illustration of SWATH hull technology is given in the following: |
| The escence of
SWATH ship Technology
SWATH ships provide significant benefits in ride quality, comfort, operational efficiency, and speed in higher seastates than conventional monohull and catamaran vessels. SWATH ships provide a platform relatively isolated from effects of ocean surface disturbance. Buoyancy is provided by twin hulls located well below the waterline. The top structure is connected to the twin submerged hulls by two relatively small cross-section area vertical structures, called struts. The submerged lower hulls provide most of the buoyancy, while the struts provide the interface between underwater hulls and the upper deck structures. The struts are slender and have significantly small waterplane areas compared to monohull or catamaran hull forms. It is this waterplane area which contributes to significant reduction in ship motions for heave, pitch and roll. In any given seastate, the ship motions are very much dependent on displacement, centers of gravity, and waterplane area at the load line. With displacement and centers of gravity being same as for monohulls, higher the waterplane area and the rate of change of this area, greater are the magnitudes of wave input forces to the hull. The design of the struts and the lower hull shape is critical in achieving a balance between good seakeeping and minimum hull drag. The design of hull form is very much dependent on naval architect's considerations for:
Various SWATH designs have used under-water hull form consisting of circular sections, elliptical, golf club shaped sections and a combination of semi-circular and rectangular shaped sections. All have certain specific merits, advantages, and disadvantages. Example of circular shaped lower hulls is found in SWATH Halcyon which was designed by the principals of MARITECH Corporation under the then RMI, Inc., San Diego. Example of golf-club shaped lower hulls is found in SWATH cruise ship Radison Diamond having a displacement of 12,000 tons. Example of semi-circular shaped lower hulls is found in U.S. Navy's T-AGOS 19 Surveillance Ship having a full load displacement of 3370 tons. Through experience, MARITECH Corporation has found that circular lower hull shape provides the best combination of all three performance parameters described above. This concept has been verified by the design, construction and launch of SWATH Halcyon , a 60-foot SWATH designed for hydrographic survey mission. Halcyon has been extensively tested by the United States Coast Guard and it performance has been well documented in their report "Technical Evaluation of the 60 foot Small Waterplane Area Twin Hull (SWATH) Ship Halcyon", Report No. CG-D-08. A SWATH can achieve high speeds
in moderate
to high seastates where conventional hull designs would fail.
This
speed advantage combined with expansive decks and superior ride-comfort
characteristics, makes the SWATH hull form ideal for many
applications which include cruise ships, mega-yachts, research ships,
and passenger ferries. |
MARITECH Corporation
principals have made pioneering contributions to SWATH technology
beginning with the M/V HALCYON, a highly successful 60-foot
60-ton vessel launched in 1985. Examples of our current SWATH designs
are:
