1、BRITISH STANDARD MARINE SERIES BS MA 28:1973 Specification for Dimensions of tracks for mast and deck fittings UDC 629.12.014.2 589.62BSMA28:1973 This BritishStandard, having been approved by the Shipbuildingand Marine IndustryStandards Committee,was published underthe authority of the Executive Boa
2、rd on 11October1973 BSI02-2000 The following BSI references relate to the work on this standard: Committee reference SME/8 Draft for comment 71/38516 ISBN 0 580 07576 1 Foreword This BritishStandard has been prepared under the authority of the Shipbuilding and Marine Industry Standards Committee and
3、 is based upon a proposal by the Ship and Boat Builders National Federation. This standard has been prepared in order to meet a growing need for interchangeability of slides used in various track and slide fittings on board yachts. A wide adoption of these dimensions will also benefit both manufactu
4、rer and user in rationalizing a principal feature of design production. Two basic forms of track section have been covered, namely a flattened “C” section for internal fitting and a stub “T” for external fitting. Two sizes are given for both sections in order to meet the great majority of present ne
5、eds in yachting. A third large size has been added for the external fitting to meet a minor but significant need of the largest yachts. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application.
6、 Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may
7、 have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSMA28:1973 BSI 02-2000 i Contents Page Foreword Inside front cover 1 Scope 1 2 Types, dimensions and tolerances 1 Figure 1 Internal f
8、itting 1 Figure 2 External fitting 1 Figure 3 Large external fitting 1ii blankBSMA28:1973 BSI 02-2000 1 NOTEUsers of this BritishStandard Marine Series, should note that while observing the requirements of the standard they should at the same time ensure compliance with such statutory requirements,
9、rules and regulations as may be applicable to the individual ship concerned. 1 Scope This BritishStandard specifies the dimension of tracks for mast and deck fittings, which are necessary to ensure the interchangeability of slides. The standard covers two basic forms of track appropriate for interna
10、l and external fitting in two and three sizes, respectively. 2 Types, dimensions and tolerances The dimensions of the finished track shall correspond to those shown in Figure 1, Figure 2, or Figure 3. Tolerances (for dimensions other than maximum or minimum) shall be+0.5mm,0.5mm. Figure 1 Internal f
11、itting Figure 2 External fitting Figure 3 Large external fitting2 blankBSMA28:1973 BSI 02-2000 BSI Certification Trade Mark The Kitemark The BritishStandards Institution is the owner of a registered certification trade mark. It is usually associated with the words “approved to BritishStandard” as sh
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