MRBX - Operational Evaluation

Abstract

This report documents the operational evaluation on MRBX, CG-250000, conducted by the CG R and DC from April 1973 to June 1975. The MRBX is intended for fast personnel rescue missions, achieves speeds in excess of 20 knots, and can survive 10-foot plunging surf. It will perform many missions of the 44-foot MLB, but is particularly suited to shallow inlet and bar areas not served by the 44-foot MLB. The MRBX is a hybrid craft with a deep vee planing forebody and a fully submerged fixed foil aft providing stern lift as well as improved seakeeping characteristics in surf. The craft is powered by a diesel-driven water-jet pump. The Op Eval described herein covers technical evaluation at NAVSEC Norfolk, Coast Guard operation evaluation on the Oregon coast, description of modifications performed and post construction seakeeping model testing. The Op Eval concluded that the MRBX is an effective craft for limited high speed rescue in areas having moderate surf and rough seas.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1975
Accession Number
ADA020978

Entities

People

  • F. M. Hamilton
  • H. H. Hudgins
  • R. E. Williams

Organizations

  • United States Coast Guard Research & Development Center

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Human Systems

DTIC Thesaurus Topics

  • Boats
  • Center Of Gravity
  • Coast Guard
  • Control Surfaces
  • Control Systems
  • Cost Reductions
  • Engines
  • Fuel Tanks
  • Jet Pumps
  • Model Tests
  • Models
  • Propulsion Systems
  • Rods
  • Shallow Water
  • Test And Evaluation
  • United States
  • Water

Readers

  • Coastal Oceanography
  • Electrical Engineering
  • Marine Hydrodynamics