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Improved readability of base repair time, Updated Example #2 to reflect the current highest repair time
<math>\text {Total repair time} = \text {HP loss} \times \text {base repair time} \times \text {ship type multiplier} + \text {30 seconds}</math>
<math>\text {Total repair time} = \text {HP loss} \times \text {base repair time} \times \text {ship type multiplier} + \text {30 seconds}</math>
<math>\text {Base repair time} = \text {Level} \times 10 \text {(if Level } \le \text {11); } \text {Level} \times 5 + floor (\sqrt {Level - 11}) \times 10 + 50 \text { (if Level } \ge \text {12)}</math>
<math>\text {Base repair time} = \begin{align*}
\left\{
\begin{array}{l l}
\text {Level} \times 10 & \text {if Level } \le \text {11} \\
\text {Level} \times 5 + \lfloor (\sqrt {Level - 11})\rfloor \times 10 + 50 & \text {if Level } \ge \text {12}
\end{array}
\right\}
\end{align*}</math>
{| class="wikitable"
{| class="wikitable"
==Repair cost==
==Repair cost==
<math>\text {Fuel cost} = floor(\text {Base fuel cost} \times \text {HP loss} \times 0.032)</math><br />
<math>\text {Fuel cost} = \lfloor(\text {Base fuel cost} \times \text {HP loss} \times 0.032)\rfloor</math><br />
<math>\text {Steel cost} = floor\text {Base fuel cost} \times \text {HP loss} \times 0.06),</math>
<math>\text {Steel cost} = \lfloor(\text {Base fuel cost} \times \text {HP loss} \times 0.06)\rfloor</math>
where base fuel cost is the amount of fuel needed to resupply that ship from 0 to full.<br>
where base fuel cost is the amount of fuel needed to resupply that ship from 0 to full.<br>
The cost is rounded down when using dry docks, so most destroyers and submarines with only 1 HP loss can be repaired for free.<br>
The cost is rounded down when using dry docks, so most destroyers and submarines with only 1 HP loss can be repaired for free.<br>
Example 1: Level 67 [[Kongou|Kongou Kai]] with 41/75 HP (34 damage):
Example 1: Level 67 [[Kongou|Kongou Kai]] with 41/75 HP (34 damage):
* Base repair time:
* Base repair time:
**<math>67 \times 5 + floor(\sqrt {67 - 11}) \times 10 + 50 = 335 + 7 \times 10 + 50 = \text {455 seconds}</math>
**<math>67 \times 5 + \lfloor(\sqrt {67 - 11})\rfloor \times 10 + 50 = 335 + 7 \times 10 + 50 = \text {455 seconds}</math>
* Repair time:
* Repair time:
**<math>34 \times \text{455 seconds} \times 1.5 + \text{30 seconds} = \text{23235 seconds or 6:27:15}</math>
**<math>34 \times \text{455 seconds} \times 1.5 + \text{30 seconds} = \text{23235 seconds or 6:27:15}</math>
* Resource costs:
* Resource costs:
**<math>floor(90 \times 34 \times 0.06) = \text{183 steel}</math>
**<math>\lfloor(90 \times 34 \times 0.06)\rfloor = \text{183 steel}</math>
**<math>floor(90 \times 34 \times 0.032) = \text{97 fuel}</math>
**<math>\lfloor(90 \times 34 \times 0.032)\rfloor = \text{97 fuel}</math>
Example 2: Level 150 [[Musashi|Musashi Kai]] with 1/106 HP (105 damage):
Example 2: Level 175 [[Musashi|Musashi Kai Ni]] with 1/108 HP (107 damage):
* Base repair time:
* Base repair time:
**<math>150 \times 5 + floor(\sqrt {150 - 11}) \times 10 + 50 = 750 + 11 \times 10 + 50 = \text {910 seconds}</math>
**<math>175 \times 5 + \lfloor(\sqrt {175 - 11})\rfloor \times 10 + 50 = 750 + 11 \times 10 + 50 = \text {1045 seconds}</math>
* Repair time:
* Repair time:
** <math>105 \times \text{910 seconds} \times 2.0 + \text{30 seconds} = \text{191130 seconds or 53:05:30}</math>
** <math>107 \times \text{1045 seconds} \times 2.0 + \text{30 seconds} = \text{223660 seconds or 62:07:14}</math>
* Resource costs:
* Resource costs:
** <math>floor(250 \times 105 \times 0.06) = \text{1575 steel}</math>
** <math>\lfloor(275 \times 107 \times 0.06)\rfloor = \text{1765 steel}</math>
** <math>floor(250 \times 105 \times 0.032) = \text{840 fuel}</math>
** <math>\lfloor(275 \times 107 \times 0.032)\rfloor = \text{941 fuel}</math>
* This is the highest in the game currently.
* This is the highest in the game currently.
{{Mechanics}}
{{Mechanics}}