_Fourth._ Two years' service in the deck department of steam vessels engaged in the ocean or coastwise fisheries, one year of such service to have been as master of such vessels, or _Fifth._ Five years' service in the deck department of sail vessels engaged in the ocean or coastwise fisheries, two years' of such service to have been as master of such vessels, or _Sixth._ Two years' service as master of ocean or coastwise sail vessels of 200 gross tons or over, or _Seventh._ Three years' service in the deck department of ocean or coastwise steam vessels for license as chief mate of coastwise steam vessels of 500 gross tons or under, or _Eighth._ Two years' service 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 for license as chief mate of coastwise steam vessels of 500 gross tons or under, or _Ninth._ One year's service as master or two years' service as first-class pilot of lake, bay, or sound towing steam vessels for license as chief mate of coastwise towing steam vessels of 300 gross tons or under. In cases where the experience of an applicant for license as chief mate of coastwise 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. Second mate of coastwise steam vessels. 33. An applicant for license as second mate of coastwise steam vessels shall be eligible for examination after he has 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._ One year's service as quartermaster or wheelsman on ocean or coastwise steam vessels while holding a license as third mate of ocean or coastwise steam vessels, or _Third._ Three years' service in the deck department of ocean or coastwise steam vessels, or _Fourth._ Two years' service 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 _Fifth._ A graduate from the seamanship class of a nautical school ship together with three months' service in the deck department of an ocean or coastwise steam vessel, or _Sixth._ One year's service as a licensed master of lake, bay, or sound steam vessels, or _Seventh._ Two years' service as first-class pilot of lake, bay, or sound steam vessels, or _Eighth._ One year's service as first-class pilot of lake, bay, or sound steam vessels, together with three months' service in the deck department of ocean or coastwise steam vessels, or _Ninth._ One year's service as chief mate of ocean or coastwise steam vessels engaged in the fisheries, or