ASTM_F_1878_-_98_2015.pdf

Designation:F187898(Reapproved 2015)An American National StandardStandard Guide forEscort Vessel Evaluation and Selection1This standard is issued under the fixed designation F1878;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers the evaluation and selection of escortvessels that are to be used to escort ships transiting confinedwaters.The purpose of the escort vessel is to limit theuncontrolled movement of a ship disabled by loss of propulsionor steering to within the navigational constraints of thewaterway.The various factors addressed in this guide also canbe integrated into a plan for escorting a given ship in a givenwaterway.The selection of equipment also is addressed in thisguide.1.2 This guide can be used in performance-based analysesto evaluate:1.2.1 The control requirement of a disabled ship,1.2.2 The performance capabilities of escort vessels,1.2.3 The navigational limits and fixed obstacles of awaterway,1.2.4 The ambient conditions(wind and sea)that willimpact the escort response,and1.2.5 The maneuvering characteristics of combined disabledship/escort vessel(s).1.3 This guide outlines how these various factors can beintegrated to form an escort plan for a specific ship or a specificwaterway.It also outlines training programs and the selectionof equipment for escort-related activities.1.4 A flowchart of the overall process for developing andimplementing an escort plan is shown in Fig.1.The processbegins with the collection of appropriate data,which areanalyzed with respect to the performance criteria and inconsultation with individuals having local specialized knowl-edge(such as pilots,waterway authorities,interest groups,orpublic/private organizations,and so forth).This yields escortvessel performance requirements for various transit speeds andconditions;these are embodied in the ships escort plan.Whenthe time comes to prepare for the actual transit,the plan isconsulted in conjunction with forecast conditions and desiredtransit speed to select and dispatch the appropriate escort vessel(or combination of vessels).A pre-escort conference is con-ducted to ensure that all principal persons(ship master,pilot,and escort vessel masters)have a good understanding of howto make a safe transit and interact in the event of an emergency.1.5 This guide addresses various aspects of escorting,in-cluding several performance criteria and methodologies foranalyzing the criteria,as well as training,outfitting,and otherescort-related considerations.This guide can be expanded asappropriate to add new criteria,incorporate“lessons learned”as more escorting experience is gained in the industry,or toinclude alternative methodologies for analyzing the criteria.1.6 This guide addresses physical control of the disabledship with the assistance of the escort vessel(s).Other possiblefunctions,such as firefighting,piloting,or navigationalredundancy,are outside the scope of this guide.Also,this guidewas developed for application to oceangoing ships in coastalwaterways;it is not suitable for application to barge strings inriverine environments.1.7 The values stated in inch-pound units are to be regardedas standard.No other units of measurement are included in thisstandard.2.Referenced Documents2.1 Code of Federal Regulations Document:233 CFR Part 168 Escort Vessels for Certain Tankers,FinalRule2.2 IMO Resolutions:3IMO Resolution A.601(15)Provision and Display of Ma-neuvering Information on Board ShipsIMO Resolution A.751(18)Interim Standards for Ship Ma-neuverability2.3 Marine Safety Committee Circulars:3MSC Circular 389 Interim Guidelines for Estimating Ma-neuvering Performance in Ship DesignMSC Circular 644 Explanatory Notes to the Interim Stan-dards for Ship Maneuverability1This guide is under the jurisdiction of Committee F25 on Ships and MarineTechnology and is the direct responsibility of Subcommittee F25.07 on GeneralRequirements.Current edition approved May 1,2015.Published June 2015.Originallyapproved in 1998.Last previous edition approved in 2009 as F1878 98(2009).DOI:10.1520/F1878-98R15.2Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.3Available from the International Maritime Organization(IMO),4,AlbertEmbankment,London,SE1 7SR,UK,http:/www.imo.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.Terminology3.1 For purposes of clarity within this guide,the vesselbeing escorted is referred to as the“ship”or“disabled ship.”The vessel accompanying the ship as its escort is referred to asthe“escort vessel.”3.2 The escorting measures addressed in this guide arebased on performance.3.2.1 The