BSI BS MA 81:1980

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Specification for ships' derrick fittings

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BSI BS MA 81:1980

Specification for ships' derrick fittings

PUBLISH DATE 1980
BSI BS MA 81:1980

This British Standard specifies dimensions and recommends materials for ships’ derrick fittings suitable for axial or permissible loads ranging from 1.6 t to 40 t inclusive.

Excluded from this standard are:

  • the specification for tubular derrick booms, for which reference should be made to BS MA 832);
  • the specification for securing bolts for the attachment of the cargo blocks to the heel blockholder or topping swivel, where special types of bolts with spring adjusters are sometimes used.

2) In course of preparation.

Specifies dimensions and recommends materials for fittings suitable for axial or permissible loads ranging from 1.6 t to 40 t.

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