of the adjustments and the use of the various screws; he must be
able to read correctly on and off the arc, and he must also be able
to find the index error both by the horizon and by the sun.

155. Corrections by Tables.—The corrections by inspection of
     tables given in some of the works on navigation will not be allowed;
     every correction must appear on the papers of the candidates.

156. Degree of Precision required.—Degree of precision required
     in the solution of the problems:
     (a.) Candidates are expected to work their problems to the nearest
     half-minute of arc and to the nearest second in time.
     (b.) In interpolating for the correct deviation to be applied in
     solving the chart questions it will usually be sufficient if
     the candidate works throughout with the nearest degree
     of deviation taken from the deviation-card; and, even in
     cases where the deviations may vary but little, the nearest
     half-degree used throughout will be sufficiently precise. It
     is not necessary that the candidate should waste his time
     in solving the course to odd minutes, as is sometimes done.
     (c.) In calculating the correction to apply to soundings the candidate is not required to work to the exact inch, as is sometimes done. It will be sufficient if he brings his answer
     within half a foot or so of a precise result.

157. Candidates may use Own Method.—Candidates will be
     allowed to work out the various problems according to any method
     they have been accustomed to use, provided such method is correct
     in principle.

158. Supplementary viva voce.—Candidates will be examined
     orally as to their knowledge of all their written and worked papers.

159. No Candidate to be examined twice in a Week.—A candidate will not be allowed to undergo examination twice in the same
     week, unless, under very special and urgent circumstances, the
     Examiner should see fit to relax this rule. In that case a special set
     of problems should be applied for from Wellington.

160. Examination of Former Enemy Aliens.—No former enemy
     alien may be examined for a certificate of competency of any grade.
     The expression “former enemy alien” means an alien who is a subject
     or citizen of the German Empire or any component State thereof,
     or of Austria, Hungary, Bulgaria, or Turkey, or who, having at any
     time been such subject or citizen, has not changed his allegiance as
     the result of the recognition of new States or territorial rearrange-
     ments, or been naturalized in any other foreign State or in any
     British possession in accordance with the laws thereof, and when
     actually resident therein, and does not retain according to the law
     of his State of origin the nationality of that State.

161. Birth or Naturalization.—No person may be examined for
     a certificate of competency as master or mate unless he is a British
     subject by birth or by naturalization in New Zealand.

162. Proof of Nationality.—Every candidate for a certificate of
     competency of any grade will be required to produce proof of nationality.
     Proof of British nationality will, in ordinary circumstances, involve
     the production of a birth-certificate or of a certificate of naturalization.
     If an applicant for examination cannot produce such a certificate he
     should be asked to furnish such documentary evidence of nationality,
     or of birth and nationality of parents, as he may be able to obtain,
     and if necessary the case should be referred to the Principal Examiner
     of Masters and Mates for consideration.

If the applicant is not a British subject he will, as a rule, be able
to produce some official document testifying to his nationality. If
there is any doubt as to the authenticity of such document, the case
should be submitted to the Principal Examiner of Masters and Mates
for consideration.

163. Examination of Aliens.—No alien may be examined for a
     certificate of competency as extra master, master, or first mate in the
     foreign or home or coasting trade unless he has acted as a master,
     chief officer, or chief engineer of a British ship, or as a skipper or second
     hand of a British fishing-boat, at any time during the war, and is
     certified by the Admiralty to have performed good and faithful service
     in that capacity.

164. Service under the Admiralty.—All service afloat in His
     Majesty's ships, or in auxiliary supply-ships, or any other ships in
     attendance on the Fleet between the 4th August, 1914, and the
     31st December, 1920 (inclusive), will be accepted in full (subject to the