Line of Sight

Introduction

Currently, there are three known purposes for Line of Sight (LoS):

• Increasing success rate in the detection phase, which allows participation in aerial combat.
• A higher Fleet total LoS (FLoS, or knowm as Simple LoS) positively correlates with the trigger chance of artillery spotting for a ship's double/cut-in attack in day battle.
  • Fleet total LoS is simply the summation of all LoS stats from your ships, including bonuses from the equipment.
• Effective LoS (eLoS), which allows the fleet to reach a specific node (usually a pre-boss or boss node) instead of being diverted to a dead end.
  • Effective LoS has been employed in many Event Maps since 2014 Spring Event, Extra Operation Maps (including 1-6, 2-5, 3-5, 4-5), and some World 6 Maps.
  • There are special formula being used to calculate eLoS. As a general consensus, LoS bonuses from equipment (especially reconnaissance seaplanes) are more important than an individual ship's LoS stats.
  • See sections below for the current established formula on how to calculate eLoS.
• Reconnaissance Seaplane equipped on a light cruiser with no plane slots can contribute to LoS. But if it is equipped onto ships and then shot down, it cannot contribute to LoS check performed afterward.

Effective Line of Sight calculation method

2-5 old formula

To avoid confusion, content here are archived into a sub-page which only serve as reference purpose. Note that those value obtained fro. 2-5 old formula are not compatible with those from 2-5 new/fall formula nor the simplified formula.

2-5 fall formula 【current de facto standard】

With the advent of the 2014 Fall Event a new formula for Effective LoS has been devised to account for inconsistencies of the old formula.

Also known as 2-5 autumn formula, 2-5 new formula or new eLoS formula in some places. It is also the eLoS formula or the LoS formula as it have already become a de-facto standard on how to calculate (e)los.

• Effective LoS = Dive Bomber LoS x (1.04) + Torpedo Bomber LoS x (1.37) + Carrier-based Reconnaissance Plane LoS x (1.66) + Reconnaissance Seaplane LoS x (2.00) + Seaplane Bomber LoS x (1.78) + Small Radar LoS x (1.00) + Large Radar LoS x (0.99) + Searchlight LoS x (0.91) + √(base LoS of each ship) x (1.69) + (HQ level rounded up to the next multiple of 5) x (-0.61)
• √(base LoS of each ship) x (1.69) = Calculate the square root of each ship's LoS (base value without any equipment) separately, then add the values together and multiply by 1.69
• Regarding the HQ Level: For example, if your HQ level is 101~105, use 105. If it's 106~110, use 110. And so on.

Excel file that calculates the fleet's LoS for you: http://1drv.ms/1IlzXGX (courtesy of Kouma231)

new fall simplified

This formula is newer than the formula mentioned above, its difference from the 2-5 fall formula is that it simplified a bit the calculation process by dividing the 2-5 fall formula with a factor of 1.6841056 and tidying up (round off and matching test result graph) some numbers. However values obtained from this formula is NOT compatible with 2-5 fall eLoS values, and thus it is not yet in active use as of today.

The formula to obtain a new fall simplified eLoS value is as follow:

Dive Bomber × 0.6 ＋ Torpedo Bomber × 0.8 ＋ Reconnaissance Aircraft × 1.0 ＋ Reconnaissance Seaplane × 1.2 ＋ Seaplane Bomber × 1.0 ＋ Radar × 0.6 ＋ Search Light × 0.5 － HQ Level ×0.4 ＋ Sum of square root of individual kanmusu LoS value

Fighters, FCF, SCAMP, as well as Type 3 Command Liaison Aircraft (ASW) values are still unknown, and can be treat with 0.5 multiplier when put into formula here.

Model

There are two different models applied to calculate the new fall simplified eLoS. Model A is used by tools like Hoppo Alpha, while Model B is used by tools like Electronic Observer.

The difference is that, in model A, after eLoS value from kanmusu is added, they are first rounded off before adding up together, and so as the multiplied HQ level. On the other hand, in model B, kanmusu and HQ level values are added together before being rounded down. According to post from Hoppo Alpha's author, applying model A onto existing data give a more linear increase in boss entry rate per every point increment and thus he applied Model A onto Hoppo.Alpha.

• P.S. LoS value from kanmusu in the above paragraph = summation of all equipment's LoS value following the rule (equipment LoS value multiply by equipment multiplier) and then plus the square root of kanmusu's own naked LoS value (without equipment)

Unknown Factor in calculation

Currently, how the ELoS would be affected by following items are still unknown.

• Fighters
• Fleet Command Facility (FCF)
• Skilled Carrier-based Aircraft Maintenance Personnel (SCAMP)
• Type 3 Command Liaison Aircraft (ASW)
• Radar Improvement
• Aircraft Proficiency