=Fuzing and Shipping the Service Torpedo, and Shipping the Secondary Spar.= (_Boat‘s._) =Pattern B. Boat-Fittings.=—See that the elevating-arm points aft. Rig in the main spar clear of the guide-ring. Point the inner end of the secondary spar through the guide-ring, the outer end resting on the rail. Reeve the leading-wires through the guide-ring from forward aft, and fuze the torpedo. Then ship the torpedo in the secondary spar, securing it by the torpedo-pin, which must be stopped in. Turn a cuckold‘s-neck in the leading-wires and stop it to the secondary spar or to the spindle, clear of the torpedo-case. Slew the secondary spar in position, butt aft. Reverse the elevating-arm, by revolving it downward, until the guide-ring is in line with the swivel-crutch and heel-rest, carefully tending the inner end of the secondary spar by a line bent on. Ship the secondary spar in the main spar, by rigging the latter out or in, and secure it by a toggle, which must be stopped in. The boat spar leading-wires are rove through the main spar. To facilitate this, a reeving-line and weight, found in the supply-box, is rove through the main spar, before the secondary spar is shipped; one end of the line is secured to the heel-bolt, and the other around the spar abreast the wire-hole. When the secondary spar is shipped, bend the end of the leading-wires to the reeving-line, rig out the torpedo until the heel of the spar is conveniently placed for hauling on the after end of the reeving-line, and reeve the leading-wires through the spar, being careful to avoid chafing the insulation. When the contact spar leading-wires are used they must be rove through the main spar, from aft forward, before fuzing the torpedo. The spar leading-wires from the heel of the ship‘s spar are taken to the terminals abreast the heel of the spar; from the heel of the boat‘s spar they are taken directly to the C machine, or to the firing-battery, a hand-firing key being interposed when the battery is used. (_See Plate XV._) _No connection, however, is to be made with terminal, machine, or battery, until the torpedo is submerged and at the proper distance from the side of the ship or boat._ =Testing the Circuit from Ships.=—After the torpedo is submerged the circuit may be tested, to do which connect the spar leading-wires to their proper terminals and connect the binding-screws T, T, of the firing-key, to the proper permanent wires. Place the firing-key as directed for testing the detonator, ship the crank of the D. E. machine, turn rapidly with the sun, and press the key T of the firing-key. A deflection of the compass-needle will indicate that the circuit is complete. (_See Plate XVI._) Or, the testing-magneto may be used to test the circuit. _The firing-battery must not be used to test the circuit._