Navigation (Compass) Regulations (Amendment) (Cth)

Statutory Rules 1964, No. 37.(a)

 

Issue of licences to compass adjusters.

1. Regulation 12 of the Navigation (Compass) Regulations is amended by omitting sub-regulation (1.) and inserting in its stead the following sub-regulation:—

“(1.) Subject to regulations 14 and 15 of these Regulations, a Regional Controller may issue a licence in accordance with Form C7 to—

(a) an applicant who holds a certificate of competency as extra master issued under or recognized by the Act; or

(b) an applicant who holds such a certificate of competency as master and who passes the examination the syllabus and conditions of which are prescribed by the Second Schedule or an examination considered to be the equivalent by the Principal Examiner of Masters and Mates.”.

(a) Made under the Navigation Act 1912-1961 on 6 March, 1964; notified in the Commonwealth Gazette on 6 March, 1964.

The Schedules.

2. The heading to the Schedule to the Navigation (Compass) Regulations is omitted and the following headings are inserted in its stead:—

“THE SCHEDULES.

FIRST SCHEDULE.”.

Second Schedule.

3. The Navigation (Compass) Regulations are amended by adding at the end thereof the following Schedule:—

SECOND SCHEDULE.

Regulation 12.

COMPASS DEVIATION EXAMINATION.

Candidates shall be examined in the following syllabus by an examiner appointed for the purposes of the Navigation (Examination of Masters and Mates) Regulations in accordance with the rules prescribed for examinations by those Regulations. In order to qualify for a pass, a candidate must obtain not less than 70% of the total marks allotted to the written section of the examination and not less than 50% of the marks allotted to each paper; and must satisfy the examiner in the oral and practical section.

Written Section.

1. Magnetism and Compass Compensation—one 3½-hour paper.

(a) Magnetism.

(i) Magnetic properties of materials, induction, susceptibility and permeability. Magnetic effects of electric currents, including calculations.

(ii) Terrestrial magnetism. Dip, total force, horizontal force and vertical force. Effects on the deviation of the compass accompanying change in the values of these elements. Variation.

(iii) Ship’s magnetism. Hard and soft iron. Permanent, sub-permanent and induced magnetism. Components P, Q, R; the rods a, b, c, d, e, f, g, h, k. The approximate coefficients A, B, C, D, E, and the causes of sextantal and octantal deviations.

(iv) Heeling error, Lambda, Lambda two and Mu.

(b) Compass Compensation.

(i) General principles of compass correction. Methods of finding, and compensating a compass for, the various components which might cause deviation, including the effects of heel and trim.

(ii) Compensation by use of the Kelvin deflector. Principle of the deflector method and information which can be deduced from readings obtained.

(iii) The siting and lining up of compasses with due regard to the proximity of magnetic material, electrical devices and other disturbing influences.

(iv) The theory of degaussing in ships fitted with M coils and compass compensation by means of B and heeling error coils.

(v) Swinging ship and the analysis of a deviation table. Analysis of a deviation book of a foreign-going ship to determine causes of irregular deviations, and suggest measures for their removal.

2. Compass Design and Electricity—one 3-hour paper.

(a) Compass Design.

(i) Size and relative position of compass needle.

(ii) Location of soft-iron correctors, and permanent magnets, with reference to each other and to the compass needles with due regard to standard binnacles of all types, overhead compasses, and pole compasses, and the probable effects if conventional limits are not complied with.

(iii) Relative position of lubber line, card, pivot, and gimbal axes.

(iv) Types of quadrantal correctors; their advantages and disadvantages.

(v) Detection of errors in instruments.

(b) Electricity.

(i) Electrical currents and their production. Simple cells of the primary and secondary types, including the effects of polarization.

(ii) Electromotive force, resistance and current.

(iii) Ohm’s law. Kirchhoff’s law. Lenz’s law. Faraday’s law.

(iv) Solenoids and electro-magnets. The effects of magnetic fields of all descriptions on the compass needle.

(v) Elementary principles of dynamos and motors.

(vi) Electric lighting and cluster lights.

Oral and Practical Section.

1. Compensation and adjustment of compasses. Demonstrations on Beall’s compass deviascope or instructional binnacle.

2. Answer any questions based on the syllabus for this examination.