28. An applicant for license as second mate of ocean steam vessels shall be eligible for examination after he shall have furnished satisfactory documentary evidence to the local inspectors that he has had the following experience: _First._ One year's service as third mate of ocean or coastwise steam vessels, or _Second._ Three years' service in the deck department of ocean or coastwise steam vessels, one year of such service shall have been as watch officer or quartermaster on such vessels, or _Third._ A graduate from the seamanship class of a nautical school ship together with three months' service in the deck department of ocean or coastwise steam vessels, or _Fourth._ Three years' service in the deck department of ocean or coastwise sail vessels of 200 gross tons or over, one year of such service shall have been as second mate of such vessels, or _Fifth._ One year's service as quartermaster of ocean or coastwise steam vessels while holding a license as third mate of ocean or coastwise steam vessels, or _Sixth._ Three years' service as a seaman in the deck department of ocean or coastwise sail vessels together with one year's service in the deck department of ocean or coastwise steam vessels, or _Seventh._ Five years' service in the deck department of ocean or coastwise sail vessels of 100 gross tons or over. Service on sail vessels engaged in the ocean or coastwise fisheries shall be accepted as meeting the requirements of this paragraph, or _Eighth._ One year's service as first-class pilot of lake, bay, or sound steam vessels of 500 gross tons or over, together with three months' service in the deck department of ocean or coastwise steam vessels, or _Ninth._ One year's service as master of lake, bay, or sound steam vessels of 500 gross tons or over In cases where the experience of an applicant for license as second mate of ocean steam vessels does not meet the specific requirements of this section, other service which the local inspectors consider a fair and reasonable equivalent may be accepted by them in lieu of the service herein specified. Examination for license as chief mate and second mate of ocean steam vessels. 29. An applicant for license as chief mate or second mate of ocean steam vessels shall be required to pass a satisfactory examination as to his knowledge of the following subjects: