Generally, you'll have your strongest girls in your regular squads anyway, so I'd suggest making the first four squads (20 girls) of your Whale team the same as your regular team. Maybe adjust the order of the squads, to make sure the absolute strongest squad is leading, but that's it.

The fifth squad is a good place to put some girls who support your entire whale team. Especially girls who give you a start with how far your Light Gauge (for the Solar Blast) is filled work well here, but also girls like Chocolate Cosmos and Strawberry Candle for their bonus nodes. Unless you have those girls in your first four squads ofcourse, no point moving them away from there.

The sixth, seventh and eight squads can then be used for "colormatching" the boss. If the whale boss you're fighting is weak to hit, then fill up these last squads with hit-girls. If it's weak to pierce, fill these squads up with the best pierce girls you didn't use yet. Colormatching the bosses' weakness increases the damage your whaleship deals (like fighting regular pests), and effectively allows whaleship team to handle bosses that are 30 to 50 percent in suggested difficulty above your ships' powerlevel.
Do note, the latest boss that was added is colorless (grey circle, no icon), and to get a bonus against it, your whaleship too has to be "colorless", i.e. have an even distribution in girl-types.

One piece of advise the colour matched teams it's best to have your strongest 5 of each in team one as all the deck enemies will be weak vs that class, not a huge thing but helps the fights go quicker

Yeah as other have said, Whale Ship is basically as follows:

Order by Total Atk 1st, Shuffle top 2-3 teams around till the 1st team is all or as close to all the same colour as the runs you will be doing, go to last few teams and replace girls with the mission colour till ship changes colour (16 girls total of that colour needed). And that is it.

You should never to almost never lose girls on the deck and your ship should never die. If either of these things happen a lot then you are probably not strong enough for this yet.

I really think people who cannot clear W1-5 should not do whaleship. At least W1-4. Anything below that is too inefficient imo.
You might get more out of running missions to make yourself stronger.

...that's a fair point, if you're struggling to do that and slipping on behind on other things that's probably a waste

Thank you for all the help provided, guys.

Looks like I did better on the whale now since I could clear the first two stages of Mission 1 (Well, my strongest girls are slice after all), but since the next one requires a 800,000 power level and I'm only at 750,000 I think I should focus on leveling the dozens of underleveled girls I have.

On that topic, I usually tend to neglect most event girls and leave them with no equipment. From what you guys said, equipment seems to be very important on whaleship. Should I fully equip all my girls or only bother with that if it is the special equips? (I don't have that many). I didn't even bought the dressbloom and skillbloom of the new girl and went straight for the equipment and atk amps. Guess I should correct that, right?
Also, If equipment is so important now should I prioritize those upgrade material before lvl100 manyu and amps?

And sorry for the noob question, but what mission is W1-5?

I guess W1-5 is for Whale Ship missions, 1st part/chapter (aka Slice missions), 5th mission. In other words, the first 80 Whaleship mission on Slice chapter.

And actually, you don't necessary need to be over the required TP for whaleship missions. Currently I'm doing the last Neutralship missions, requiring 1300k TP with ~1060k TP ship. With 100% succes and almost 100% no dead girl during small pests battles. So yeah, it depend a bit of your girls and teams but with a strong ally, I'm pretty sure you can do the 800k mission. And you know... just start the mission. If it goes wrong, you can still close the game tab without stamina loss (at least, if you don't do this too often).

Originally Posted by PSthebest

Thank you for all the help provided, guys.

Looks like I did better on the whale now since I could clear the first two stages of Mission 1 (Well, my strongest girls are slice after all), but since the next one requires a 800,000 power level and I'm only at 750,000 I think I should focus on leveling the dozens of underleveled girls I have.

On that topic, I usually tend to neglect most event girls and leave them with no equipment. From what you guys said, equipment seems to be very important on whaleship. Should I fully equip all my girls or only bother with that if it is the special equips? (I don't have that many). I didn't even bought the dressbloom and skillbloom of the new girl and went straight for the equipment and atk amps. Guess I should correct that, right?
Also, If equipment is so important now should I prioritize those upgrade material before lvl100 manyu and amps?

And sorry for the noob question, but what mission is W1-5?

In my case equipment was the deciding factor.

My team had about a 70-80% chance each time to finish the hardest stage for each color before the ship got shot down.
After rearranging my teams and equipping all of them, I had 100% clear rate so far.

I sorted the teams by total power and switched the lowest members (of team 7 and 8) to match the color of the mission.
As for the equipment, I have all the event equips so far plus about 10 rings and 10 earrings of rarity +10, which I distrubuted by total power to the girls with the highest score (since they are present in each prepared ship squad).

Most of these are your own call - if you're seeing some trouble in clearing the mission each time, you should try to fiddle with equipment.

Originally Posted by PSthebest

Thank you for all the help provided, guys.

Looks like I did better on the whale now since I could clear the first two stages of Mission 1 (Well, my strongest girls are slice after all), but since the next one requires a 800,000 power level and I'm only at 750,000 I think I should focus on leveling the dozens of underleveled girls I have.

On that topic, I usually tend to neglect most event girls and leave them with no equipment. From what you guys said, equipment seems to be very important on whaleship. Should I fully equip all my girls or only bother with that if it is the special equips? (I don't have that many). I didn't even bought the dressbloom and skillbloom of the new girl and went straight for the equipment and atk amps. Guess I should correct that, right?
Also, If equipment is so important now should I prioritize those upgrade material before lvl100 manyu and amps?

And sorry for the noob question, but what mission is W1-5?

If you're at 750k with at least 16 Slice girls, then you should be fine for the 800k mission. The recommended TP doesn't seem to account for matching the damage type, and your helper squad will boost your TP as well.

It is recommended that you first upgrade the 5 * level to LV70 before challenging whales.

Although it will lose a lot of things, but at least make you play games faster and easier.