439. The XV-in. passing-box requires two men to carry it to the
turret-chamber.

440. The allowance of projectiles can only be determined by the
character of the service expected, and the stowage capacity of the
vessel, which is limited to about 150 rounds per gun for sea-service.

441. By reason of the contracted space in these vessels, all shell
should be filled, and all powder must be made up into cartridges.

442. All XV-in. shell shall be fitted with three fuze-holes, and
issued for service fuzed with 3-1/2, 5, and 7 seconds fuzes.

443. When the distance of the object is known to be less than the
range of the shortest fuze, and time will admit of doing so, uncap all
the fuzes. At other times uncap the fuze suited to the distance, and
the one of longest time of burning.

[Illustration: NOMENCLATURE OF 13 INCH MORTAR. CARRIAGE AND CIRCLE. D.
Van Nostrand Publisher. Julius Bien, pr.]

FOOTNOTES:

[43] The compressor-shaft should be marked as a guide to No. 1 to know
when compressed sufficiently.

CHAPTER VII.

MORTARS.

444. TITLES OF MORTAR CREW.

(See Diagram 1.)

No. 1. First Captain.
No. 2. Second Captain.
No. 3. First Loader and Trainer.
No. 4. First Sponger and Trainer.
No. 5. Second Loader, Front Eccentric Trainer.
No. 6. Second Sponger, Front Eccentric Trainer.
No. 7. Left Circle Eccentric Trainer and Shell-carrier.
No. 8. Right Circle Eccentric Trainer and Shell-carrier.
No. 9. Left Circle Eccentric Trainer and Shell-hoister.
No. 10. Right Circle Eccentric Trainer and Shell-hoister.
No. 11. Rear Circle Eccentric Trainer and Shell-hoister.
No. 12. Rear Circle Eccentric Trainer and Shell-hoister.
No. 13. Powder-man.

During exercise or action, Nos. 9, 10, 11, and 12, in addition to
their other duties, will hoist up shell from below.

445. IMPLEMENTS AND EQUIPMENTS.

-----------------+---------------------------------------------------------
ARTICLES. | WHERE THEY ARE PLACED.
-----------------+---------------------------------------------------------
Handspikes. | Two on each side of the bed against the cheeks, leaning
| upon the manoeuvring-bolts, the ends towards the
| vessel's sides, and those of the front handspikes even
| with the front of the cheeks.
|
Haversack. | Containing fuzes, and a pair of sleeves, attached to
| th