Subject: Hydrogen for fuel cell submarines 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Long wave 38 general knowledge quiz questions. It should take around 8 minutes to complete all the questions.

Subject: Virginia-class submarine 14 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Delta-class submarine 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Advanced navigation 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Fin restoration 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Audio warning mechanism 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Sonic warning sound 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Underwater iceberg 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Marine volcano 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Very low frequency 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Carrier Battle Group 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Underwater infrastructure 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Fathometer 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Multi-purpose seal 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Seal failure 38 general knowledge quiz questions. It should take around 8 minutes to complete all the questions.