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Chronometers and clocks.

Deck clock,

Corrections

581. (1) He shall wind the chronometers daily, and carry out such instructions as may be given from time to time concerning their care, comparison, and rating. The chronometer comparison book shall be forwarded to the Bureau of Equipment at the end of the cruise.

2) He shall have the care of the deck clock and regulate the ship's

time. Lead lines and 582. He shall frequently examine the lead lines and other soundspeed-measuring ing gear, and all apparatus used for determining the speed of the

ship, and see that they are in order and correctly and properly

marked. Duties when ap 583. (1) He shall previous to entering pilot water study the charts, proaching shoals sailing directions, and other sources of information concerning the or in pilot water.

navigation of the ship therein, so that he may be prepared to give to the captain any information or assistance required concerning this duty.

(2) He shall, when the ship is approaching land or shoals, or entering port. give his careful attention to the course of the ship and the depth of water.

(3) If he thinks the ship is running into danger he shall at once notify the officer of the deck and advise him as to a safe course to be steered, and promptly report to the captain.

(4) The duties mentioned herein shall be performed whether there be a pilot on board or not.

584. He shall keep corrected to date all the charts, sailing directo be made in tion, light and beacon lists of the ship, in accordance with personal charts, etc.

observation, and such other reliable information as he may from

time to time be supplied with, or be able to obtain. Hydrographic 585. When hydrographic surveys are made he shall construct on

a large scale the charts of the ground surveyed, to be forwarded to

the Department. Latitude and 586. When determining the position of places whose latitude or longitude of longitude, as laid down on charts or recorded in tables, is believed places not well to be in error, he shall carefully note the particular spot at which

the observations were taken, describing it in such a manner that it may be plotted on a chart, and shall state the number and nature of the observations and the manner in which they were taken. If he obtains the longitude by means of chronometers and meridian distances, he shall state the number of chronometers employed, their general character, the age of their rates, and the longitude he assumed as that of the place measured from. A copy of all data, as well as of the computations made, shall be forwarded by the captain to the Navy Department.

587. He shall, so far as practicable with the means and appliances at his command, make tidal and current observations at all places visited where careful observations of this kind have not been recorded, and endeavor to ascertain the set and strength of the tides, the limits of their rise and fall, and the time of high water imme

diately following the periods of a new or full moon. Book for com

588. He shall keep a book in which shall appear all original obserputations. vations and computations, made for the purpose of navigating the

ship, or copy thereof, with results and dates. This book shall be regarded as an official record of his performance of his daties in the

surveys.

Tidal observations.

The log.

navigation of the ship, and shall be subject to examination by superior authority. At the end of the cruise it shall be forwarded to the Navy Department.

589. (1) He shall have charge of the preparation and care of the ship’s log.

(2) When the ship is commissioned, he shall begin the log by entering and signing the remarks describing that part of the ceremony of going into commission which takes place previous to the setting of the watch.

(3) He shall carefully examine the deck log, see that it is prepared in accordance with the instructions issued from time to time, and call the attention of the watch officers to any inaccuracies or omissions in their entries. He shall then have it accurately and neatly copied into the smooth log before morning quarters each day, and he shall have it placed before the watch officers for signature.

(4) He shall enter each day in the deck log the course and distance made good, the ship's position, the variation of the compass, the amounts of coal and water expended, and the quantity of each remaining on hand at noon.

(5) After the smooth log has been duly signed by the watch officers and himself, and before 1 p. m. daily, he shall submit it to the captain, who will approve and sign it at the end of each month, and also when the book in use has been filled out.

(6) The smooth log shall be forwarded to the Navy Department as soon as the book is filled out, and the deck logs shall be turned in to the equipment officer of the navy yard at the end of the cruise.

(7) He shall be allowed a yeoman for his clerical work.

590. He shall carefully prepare all hydrographic reports and Meteorological meteorological returns required, in accordance with instructions observations. and forms issued from time to time, and submit them to the captain for transmission.

591. He shall perform the same duties in connection with the Duty in regard examination, invoice, receipt, account, issue, expenditure, preserva- to equipment tion, care, survey, and the preparation of requisitions, reports, and returns of the supplies which pertain to the navigator, as are performed by the executive officer in connection with other equipment supplies.

592. (1) He shall be responsible for the library books issued to Ship's library. the ship, and, if any which are not upon the invoice are needed, he shall make requisition for them.

(2) Books which are kept in the apartments of the flag officer or the captain shall be in charge of their respective clerks, who shall attend to the issue of such books for temporary use to officers and others, and shall be responsible for their care and preservation. They will report monthly to the navigator, in writing, any changes in the books on hand

593. When a ship is put out of commission, he shall not be detached, nor the chief quartermaster paid off or transferred, until the end of a the supplies that have been in the custody of the navigator have cruise. been turned into store and the invoices thereof receipted by the general storekeeper.

594. He shall, immediately before leaving port, and as soon as possible after entering, carefully take the draft of the ship forward, ship. amidships, and aft, and have it entered in the log.

stores,

Detachment at

Draft of the

ances.

'aking the 595. (1) When the officer of the deck is required to take part in
k.

drills and exercises, the navigator shall take the deck, unless another
officer be designated for this duty by the captain.

(2) He may relieve the officer of the deck at any time as a matter

of accommodation. Electric ap

596. (1) He sha be charged with th care, preservation, efficiency, and working of all electric generators, appliances, and appurtenances in the ship, and with the cleanliness and good condition of the dynamo room and electrical workshops.

(2) He shall not permit temporary outlets to be made in the electrical circuits of the ship unless duly authorized by the Depart

ment. Vhen acting as 597. When acting as executive officer during a temporary absence cutive officer. or disability of the latter, he shall endeavor to have the work of the

ship carried on in all respects as it would be if the executive officer

were on duty. tation at quar

598. At quarters and in action he shall take the deck and assist

the captain as may be required. bsenting him 599. He shall not absent himself froin the ship during the absence If from the of the captain and executive officer, except upon urgent public duty.

SECTION 2.-DUTIES AS ORDNANCE OFFICER.

(2) He shall, du zines and shell roo fooding and drain stowage complete without fracture; ample in power, an means for supplying ample.

(3) When the ma nition, and he is fa report the fact to th

(4) Should he disc diately make a detai

607. During the rooms and test all result to the executiv

P.

608. He shall, in cer, have the clerical provided in article 77

609. (1) When a s gunner or gunner sha been in the custody o store and the invoices

(2) If there is no chi gunner's mate shall n circumstances permitt

res.

Officers' re-
Ivers.

Personality. 600. The navigator is the ordnance officer of the ship.
General duties. 601. He shall have charge of all material, stores, supplies, and

articles of outfit pertaining to the Bureau of Ordnance, and be
responsible for the care and preservation of the same, except as pro

vided for in article 632, paragraph 1.
Duty in regard 602. He shall perform the same duties in connection with the
ordnance examination, invoice, receipt, account, issue, expenditure, preserva-

tion, care, survey, and the preparation of requisitions, reports, and
returns of ordnance stores and supplies, as are performed by the
equipment officer in connection with equipment stores and supplies.

603. He shall require to be returned to him upon the detachment
of officers, revolvers and other ordnance stores which have been

loaned to them for their personal use.
Duty in regard 604. He shall be held responsible for the efficiency of the arma-
the armament. ment, and of all appurtenances connected therewith, together with

the cleanliness and good condition of the storerooms, magazines,

shell rooms, and ordnance workshops.
Corpedo officer. 605. (1) He shall be responsible for seeing that the torpedo outfit

is kept in order and ready for service. He shall carefully observe
and carry out the directions laid down in the torpedo instructions.

(2) Whenever an automobile torpedo is lost in practice, he shall
make a request in accordance with forms provided for the appoint-

ment of a board to inquire into its loss.
fitting 606. (1) When fitting out, he shall make a careful inspection of

the battery and its appurtenances, and of all arms, equipments, and
other material belonging to the ordnance department; of the maga-
zines and shell rooms, the passages, light-boxes, flood cocks, outlet
and overflow pipes, hose, hoisting and transporting gear, and all
other appurtenances connected with the stowage, care, preservation,
and service of the ammunition of the ship.

When t.

(2) He shall, during his inspection, ascertain whether the magazines and shell rooms are dry and their linings tight; the means for flooding and draining efficient and in order; the arrangement for stowage complete and ample; the lenses clean, carefully set, and without fracture; the lighting apparatus in order, well ventilated, ample in power, and capable of burning at least four hours; and the means for supplying ammunition to the battery safe, efficient, and ample.

(3) When the magazines and shell rooms are ready for the ammunition, and he is familiar with all their appurtenances, he shall report the fact to the executive officer.

(4) Should he discover any defects or deficiencies he shall immediately make a detailed written report of the facts to the captain.

607. During the cruise he shall inspect the magazines and shell Inspections rooms and test all of the flood cocks once a week, reporting the during cruise. result to the executive officer and causing it to be entered in the log.

608. He shall, in the performance of his duties as ordnance officer, have the clerical assistance of the chief gunner or gunner, as the gunner. provided in article 779, paragraph 4.

609. (1) When a ship is put out of commission, he and the chief Detachment at gunner or gunner shall not be detached until the supplies that have the end been in the custody of the ordnance officer have been turned into store and the invoices thereof receipted by the general storekeeper.

(2) If there is no chief gunner or gunner on board, then the chief gunner's mate shall not be paid off nor transferred except under circumstances permitting the detachment of a gunner.

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611. At sea he shal and carry a spyglass or

612. Every officer of his rank, who is subject ecutive officer, shall be

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