This phrase emphasizes the intense training by leaving off Saturdays and Sundays.

But that doesn't mean sailors aren't without breaks for the entire year.

So you can still take breaks even while in the Navy- dechi!?

They can, but not while under concentrated training.

The combined fleet looked like this prior to the war. (Though is this a rough estimation.)

Home port

First Fleet Training

Type A battle drills

Second fleet training

Type B training

Jan

June

December

Small scale practice Large scale practice(every three years) Specially large scale practice(every 5 years)

New recruits comes aboard

Oh... (saw that coming)

Going around the regions. Not just the mainland, they also went to Taiwan, Korea, Manchuria, Palao, Truk, and Saipan

Training close to real battle

Climax of the year! Students are grouped into Blue Team (ally) and Red Team (enemy, mostly reserve ships) and they engaged in battle

Place for the officers to show off their strategy and tactics

Imperial Navy is reorganized for war by the end of 1937, so this explanation is for the period before that

Intense training in the working ground

Probably the most difficult time in the whole year

Intense training in special anchorage called "Work Ground". Here they are given basic training and education

So in the end, 8 of the 12 months are spent for intense training dechi!!!

There's also small scale tactical training called "Basic Practice" performed about 10 times a year

Return to home port and prepare for the next year

I am in your care

Zzz

Uph

Uph

Home Port

Mamiya-san goes off and buys supplies and stuff