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USS Johnston (DD-557) Fletcher class Destroyer

USS Johnston (DD-557) was a Fletcher-class destroyer built for the United States Navy during World War II. She was launched on 25 March 1943 and entered active duty in October under the command of LCDR Ernest E. Evans and was assigned to the US Pacific Fleet.

On 25 October 1944, while assigned as part of the escort to six escort carriers, Johnston, two other Fletcher-class destroyers, and four destroyer escorts were engaged by a large Imperial Japanese Navy flotilla. In what became known as the Battle off Samar, Johnston and the other escort ships charged the Japanese ships to protect nearby US carriers and transport craft. After engaging several Japanese capital ships and a destroyer squadron, Johnston was sunk with 187 dead, including Evans. Johnston's wreck was discovered on 30 October 2019.

https://en.wikipedia.org/wiki/USS_Johnston_(DD-557)
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This is an extensive rework of my previous Fletcher class destroyer, enough that I am uploading it separately.

It has most of the features of a Fletcher class DD and fits in the standard build area. Things are a little squished together, I would have liked to have another 20 meters of length, but made do.

Features:
-5 Single Battle Cannon Turrets (Mark 12 5"/38). The forward 3 are controlled from the Director above the wheelhouse, the aft 2 from the secondary director between the 3rd and 4th turrets, but all can be controlled from the forward director. Each gun has 39 rounds available in the turret, with another 160 in the reloading system below decks.
-1 quad and 2 Twin Heavy Autocannon (Bofurs) mounts, with radar assist, able to be linked and all controlled from Aft gun.
-2 Manual Single Light Autocannon (Oerlikon) mounts
-2 Mk 51 FC director on bridge railing, each controlling 1 Twin Heavy and 2 Single Light Autocannon.
-10 torpedoes in two mounts.
-2 Inline 6 5x5 Modular engines, up to about 50 Knots (which is too fast, I know)
-2 V6 3x3 modular generators, capable of ~2070 watts each.
-Fire and flooding alerting system, fire suppression system in engine and generator rooms, too many automated bilge pumps, two fire mains feeding numerous hose anchors all over the ship.
-Radar and Sonar, with map plot for radar contacts.
-Automated lookout, scans the horizon, if it finds something interesting, pauses and zooms in before continuing on.

Operations:
--Bridge
-Engines and generators started from helm, as well as gear selection clutch and throttle, with a Throttle indicator next to the wheel. In highest gear will cruise at 69% throttle, at ~6.5 RPS, at 26 knots with no smoke from the stacks, and flank speed/100% in top gear will go about 50 Knots without overheating, but burn a lot of fuel.
-Generators have 3 operating modes, minimum/default (50% throttle, ~570 Watts each) High (70% throttle, 1100 watts each) and Emergency (100% throttle 2070 watts each) selectable with buttons to the right of the helm. Default makes no smoke, high does smoke, but will not overheat. Emergency will overheat eventually.
-Maneuver mode for slow speed/docking, at high rudder angles will put the inside prop in reverse. Works, OK, but not great.
-Red and Blue flashing lights in front of helm are alerts for fire and flooding. There are fire and flooding panels in Damage Control (2 levels directly below wheelhouse) that will show which compartment is flooding or on fire so appropriate action can be taken.

Weapon systems:
-All Main guns are operated from the FC director stations, (no local control), the AAA mounts and Mk 51 FC directors use look controls, the main guns use W-S-A-D.
-Main guns uses stacked robotic pivots to get full rotation, the upper pivot is controlled bu the A/D keys, the lower pivot is controlled by a composite panel to the right of the screen (top), and can be quick slewed to port and stbd quarter, or beam. From the front controller, selecting either "beam" option turns on broadside mode, which takes control of the rear turrets.
-Range compensation is built in, either by Radar, Laser, or manual entry. Radar has priority, if there is radar contact it will use that range, if no contact it reverts to laser range. Selecting manual overrides both, and can be selected and adjusted from the composite panel to the right of the screen (bottom). Ranges for each are shown on the controller screen.
-There are three radar assist modes, range only, elevation assist, and target tracking (bearing), with support for leading the target, or adjusting up/down with the composite panel to the left of the screen (top). Adjustments can be reset using hotkey 6. Radar tracking only works if the turret is pointed in the general direction of the target with the fast slew buttons, (quarter, beam) so you might need to maneuver the ship to take advantage.
-Firing is manual with the space-bar, or continuous using the keyed button to the right of the screen.
-Angle between the fore and aft guns can be adjusted or reset composite panel to the left of the screen (bottom). The 2x4 screens show the camera from the fore and aft turrets to assist setting the angle.
-Aft FC director has all the functionality of the main, except it cannot control all the turrets, only the aft, so the angle control is not necessary.
-turrets can be reloaded individually, or from the FC director for the turrets they control. Turrets need to be parked forward at 0 elevation, so turn off any fast rotation to quarter or beam, and get out of the seat. There is a reload button at each director, to the left of the screen. When reload is on, the screen changed to a camera on the loader, when the shells stop moving the turret is loaded.
-Torpedos can be aimed and fired locally on each mount, or from a switch panel on the back wall of the bridge. They can be flaky, they seem to work perfectly in testing, but when firing at AI enemies they often nosedive and detonate on the ocean floor.

AAA turrets
-The Heavy Autocannon AAA mounts can also be slaved, but only from the Aft mount above turrets 3 & 4. The port and Starboard mounts will match the position of the aft mount, provided it is within their field of fire, if outside that range, they will park themselves pointing 90º outboard.


Contributions/Workshop items included:

MrNJersey NJ Modular Engine ECU V5 and NJ EXAMPLE LUA RADAR
https://steamcommunity.com/sharedfiles/filedetails/?id=2415184561
https://steamcommunity.com/sharedfiles/filedetails/?id=1899288562

Zizo's Radar & Sonar System (only the sonar part)
https://steamcommunity.com/sharedfiles/filedetails/?id=1982539881

Käsekuchen's Modular Map Radar Module and Modular Map Main Module
https://steamcommunity.com/sharedfiles/filedetails/?id=2176463808
https://steamcommunity.com/sharedfiles/filedetails/?id=2176463130

Shairo-jp's Ballistic Calculator
https://steamcommunity.com/sharedfiles/filedetails/?id=2628490430

Torpedos are derived from this one, and still use most of the original logic.
MM's MM MK1 Sonar Guided Torpedo
https://steamcommunity.com/sharedfiles/filedetails/?id=2626378521

GunGoesPewPew's Burst-Fire Sequencer
https://steamcommunity.com/sharedfiles/filedetails/?id=2638676216