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    ASTM F841 - 19

    Standard Specification for Thrusters, Tunnel, Permanently Installed in Marine Vessels

    Active Standard ASTM F841 | Developed by Subcommittee: F25.11

    Book of Standards Volume: 01.07

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    This specification supplies the general characteristics and requirements, and interface details of propeller-type, fixed-tunnel thruster units that are permanently installed in marine vessels or structures. Thrusters manufactured in accordance with this specification shall be identified by the following types and grades: Type Ifixed pitch; and Type IIcontrollable pitch; Grade 1intermittent duty for docking and navigation; and Grade 2continuous duty for stationkeeping or dynamic positioning. The thrusters shall meet the design, manufacturing, dimensional, and workmanship requirements specified herein.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification supplies general characteristics and interface details of propeller type, fixed-tunnel thruster units permanently installed in marine vessels or structures.

    1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    Note 1: This specification supplies only general design, interface, and purchase information and does not include requirements for use, thruster controls, or associated equipment. The purchaser of the thruster equipment specified herein is cautioned that he must properly correlate the operating requirements with the thruster specified.

    1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    American Bureau of Shipping

    ABS Rules for Building and Classing Steel Vessels

    ASTM Standards

    A743/A743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application

    ISO Document

    ISO 484-2 Shipbuilding Ship Screw Propellers Manufacturing Tolerances Part 2: Propellers of Diameter Between 0,80 and 2,50 m Inclusive

    ICS Code

    ICS Number Code 47.020.70 (Navigation and control equipment)

    UNSPSC Code

    UNSPSC Code 25111900(Marine craft systems and subassemblies)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/F0841-19

    Citation Format

    ASTM F841-19, Standard Specification for Thrusters, Tunnel, Permanently Installed in Marine Vessels, ASTM International, West Conshohocken, PA, 2019, www.astm.org

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