Line of Sight

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This page is for "Effective Line of Sight" (ELoS), also called "Fleet LoS", as it pertains to branching requirements. Certain maps require the fleet to hit a certain LoS threshold in order to get routed to the boss or pre-boss. As a rule LoS from equipment is more important than ship LoS when determining ELoS.

For details on the LoS Line of Sight stat, please see Stats.

Calculating LoS

Formula 33

Formula 33, sometimes referred to as F33 is the most accurate "Fleet LoS" calculation formula known. It is described as follows[1]:

LoS Formula 33
[math]\displaystyle{ \begin{align} \text{Fleet}_\text{LoS} &= \sum_{s \in \text{Ships} } \sqrt{Ship_\text{LoS} } + C_{n} \sum_{e \in \text{Equipment} }C_{e} ( S_{e} + S_e^{\star} ) - \lceil Q \times HQ_\text{Lv} \rceil + 2M \\ S_e^{\star} &= C_e^{\star} \cdot \sqrt{\bigstar_e} \end{align} }[/math]
With
  • [math]\displaystyle{ Ship_\text{LoS} }[/math] the ship's base LoS  .
  • [math]\displaystyle{ C_{n} }[/math] the Node factor, it represents the weighting of the formula that is known to vary across different maps and nodes. See following section for more details.
  • [math]\displaystyle{ C_{e} }[/math] the equipment multiplier (see bellow),
  • [math]\displaystyle{ S_{e} }[/math] the displayed LoS value of the equipment, excluding visible fit bonus,
  • [math]\displaystyle{ S_e^{\star} }[/math] the equipment's Improvement   bonus to equipment LoS (see [math]\displaystyle{ C_l^{\star} }[/math] bellow),
  • [math]\displaystyle{ C_e^{\star} }[/math] is the improvement modifier of the equipment, see table bellow.
  • [math]\displaystyle{ \bigstar_e }[/math] is the improvement level   of the equipment.
  • [math]\displaystyle{ Q }[/math] the HQ level modifier, varying depending on the map:
    • 0.35 on 5-2 and 6-3.
    • 0.4 otherwise.
  • [math]\displaystyle{ HQ_\text{Lv} }[/math] the HQ level.
  • [math]\displaystyle{ M }[/math] the number of empty ship slots in the fleet:
    • 0 for 6 ships fleet,
    • +1 increase per missing ship,
      • This value can increase mid-sortie if a ship is sunk or evacuated.
    • -1 for a full Striking Force Fleet (7 ships).
Notes
  • Equipment LoS weight more than ship LoS.

Equipment Types

Equipment type [math]\displaystyle{ C_{e} }[/math] [math]\displaystyle{ C_e^{\star} }[/math]
 Recon Seaplane Recons 1.2 1.2
 Bomber Seaplane Bombers 1.1 1.1
  Carrier Recons 1 1.2
  Torpedo Bombers 0.8 0
  Fighter 0.6
  Dive Bombers
  Seaplane Fighters
  Liaison Aircraft
  Large Flying Boats 1.2
 Small Small Radars 1.25
 Large Large Radars 1.4
  Sonars 0
  Searchlights
  Skilled Lookouts
  Aviation Personnel
  Command Facilities
  Submarine Equipment
  Landing Craft
 Minisub Midget Submarines
  Small Caliber Main Guns

Other equipment types are speculated to be:[2]

  • [math]\displaystyle{ C_{e}=0.6 }[/math]
  • [math]\displaystyle{ C_e^{\star}=0 }[/math]

Equipment LoS weighting modifier

  • Also known as node factor.
  • Depending on the map, equipment is weighted with more importance.
  • It is denoted as Cn in the formula.
  • See the table below for Cn values used by each map.
  • Ship LoS is less effective in those maps with higher equipment weight modifiers.

Estimated LoS

Data sourced from TsunDB. Values are the lowest and highest reported LoS for routing. Please note that there may be some margin of error due to random routing.

Map Cn Origin Node Lower Threshold Upper Threshold Destination Node Fail Destination Notes
1-6 3 M 29.7 159.6 J L Not meeting composition requirements also routes to L.
2-5 1 G 37.3 87.8 L K
I 31.2 59.4 O H
J 42.4 91.2 O H
3-5 4 G 24 337 K I
H 39.1 321.4 K J
7-2 ?? E -32.1 136.5 G F Appears to be fixed routing based on composition but still plays the LoS routing animation.
4 I 66.1 294.5 M L
7-4 ?? G ?? ?? L F
?? E ?? ?? K/P L Not meeting composition requirements also routes to L.
4 M 50? ?? O N Not meeting composition requirements also routes to N or P.
7-5 4 O 57 ?? M L
P 58 ?? T/R S Composition determines the T/R route.
4-5 2 K 64.8 146.5 T L
Q 62 167 N/O P Low number of reports.
?? O 62 167 T N Appears to be fixed routing based on composition but still plays the LoS routing animation.
5-2 2 F 64 147 O H
L 73.8 81 K N Low number of reports.
5-4 2 L 57 185 P N
M 42.3 150.1 P O
5-5 2 O 63.8 134.5 S R
P 74.4 167.7 S Q
6-1 4 G 16.7 218.1 H I
H
(With AS)
25.4 201.4 K E
H
(Without AS)
23.3 218.1
6-2 3 E 46 179.8 J I
H 42.8 42.8 K G Low number of reports.
I 35.7 205.8 K G
6-3 3 E 19.4 180 G F Routing is heavily influenced by composition as well.
6-5 3 G 56.3 196.2 M K
?? J 37.2 193 M L Appears to be fixed routing based on composition but still plays the LoS routing animation.

LBAS LoS

Unlike ship mechanics, LBAS do not need/utilize the LoS stat and so this stat is mostly useless.

The only use for LoS is for "Defense Fighter-Power" in air defense mode, where it determines the "Reconnaissance Defense Bonus" ([math]\displaystyle{ \text{Mod}_\text{recon} }[/math]) for  Recon Seaplane Recons,   Large Flying Boats, and  LB Land-based Recons:

Reconnaissance Defense Bonus
LoS  ReconSeaplane
 Large Flying Boat
 Carrier-based  LBLand-Based
≥9 1.16 1.3 1.24
8 1.13 - 1.18
≤7 1.1 1.2 -

The LoS on all other aircraft or in other LBAS modes is not counted.

FAQ

Q: Why do I keep getting offrouted?

A: Double check that your fleet LoS according to relevant formula meets the LoS threshold for the map. Viewers such as KanColle Command Center Kai, Poi Viewer, KCANotify, KanColle Viewer and Electronic Observer can calculate your fleet's LoS easily for you.


Q: How do I increase my LoS?

A: Reconnaissance seaplanes are the fastest way to raise LoS. The other easy way is to stack radars. Upgrades to reconnaissance seaplanes are also a good way to increase LoS when slots are limited. It is not recommended to stack carrier-based recons or seaplane bombers because too many can compromise the combat ability of your fleet. Another way is to level your ships. Because LoS increases as you level, marrying your ships means their LoS stat can go even higher.


Q: I had enough LoS, how did I get off routed?

A: Planes that are wiped out no longer contribute to LoS. If you were depending on bombers to hit the LoS threshold, you can fall under the threshold when encountering heavy enemy anti-air.

See Also