I'm not going to get into the weird physics of this awful Hanna-Barbera schlock that could only have existed on American TV in the 1970s- like how the signal to summon Godzilla (yes, he's being summoned, more about that in a moment) is the same through the water and through the air, or how no matter where the ship is, when Godzilla appears he stands ankle-deep in the OCEAN right next to it. Nor am I going to try to justify the presence of a stupid kid on what are always very dangerous scientific expeditions- again, that was just required content for a Hanna-Barbera offering at the time.
Instead, I'm going to focus on the Scrappy Do of the show- Godzooky. The presence of this obnoxious, clumsy, totally pointless annoyance bothered me even when I was a kid (if you didn't find Godzooky a time-wasting irritant by the time you are six years of age, there was something wrong with you.) But as an adult, I realize that the character plays a vital and very disturbing role in the series.
The revelation came when I read this query in the comment section: "how does Godzilla simply appear seconds after he's called? Is he following the boat around all the time?" The answer is yes. Yes, he is. Godzilla is forever swimming around near the boat, keeping a respectful distance until he is called upon to put himself in danger for the benefit of the humans who are HOLDING HIS RELATIVE GODZOOKY HOSTAGE. Clearly the "scientists" have made a deal with Godzilla- you don't destroy Japan anymore, you come whenever we call and risk your life for ours whenever we deem it necessary, and in turn we won't do what we want to do with Godzooky, which is kill him in the most painful way we can come up with.
Godzilla isn't a friend to the humans, rushing to their aid, throwing himself at fire dragons and other Not Trademarked creatures to save everyone from doom at the risk of his own life. He's a hit man forced to work for the mob that has his kid under their control and will mail back pieces of him if he doesn't reply "how high?" when told to "Jump." Godzooky is tolerated because he's a non-human human shield; the instant something wonderful happens and Godzooky is no more, those scientists and that stupid kid are Godzilla food. And they'll totally deserve it. I want to see that episode.
By the way...this is the junk kids my age got fed along with Tom and Jerry (nonstop violence!), Sylvester and Tweety (pet abuse!) and Roadrunner (animal cruelty!) Kids today get Bluey, Peppa Pig, Pupstruction, SuperKitties, Paw Patrol, Doc McStuffins....maybe they can't afford to attend college without taking out loans they'll never pay off, maybe they'll never own a house, and maybe they'll hold down two dozen different jobs over the course of their lifetimes, but no one can argue that their choice of animated entertainment is vastly superior to the stuff we were assaulted with growing up.