"Nani?"

"My comment?"

Ozawakawa was confused. What could he have? If it was a US Navy ship, could he still say something about it? Information? He is really not familiar with it.

Zuo Chong stared at him for a while, and saw that the guy looked dull, he had to shake his head helplessly.

"Okay, I suggest that you and I will act separately in the next step, and you will verify the accuracy of meteorological data. I will be responsible for the hydrological data.

Your job is very simple. Try to collect newspapers from these months, compare and verify them with the above meteorological records and information.

For example, from 1907 to this year, whether their rainfall, weather and other data have the same trend on the same date or month.”

Ozawakawa breathed a sigh of relief. If so, he would be able to do it, just reading the newspaper.

As for the statistical method of "year-on-year", he also studied it at the Etashima Naval Military School.

Thinking of this, Ozawakawa spoke confidently and even exerted his subjective initiative, proposing that the broadcast data of the morning can be included in it.

Every morning at 8 o'clock, the broadcast on Oahu will predict the temperature and weather of the day. This is first-hand information and has high accuracy.

"Yoxi, Ozawa-kun, you said it very well."

Zuo Chong said perfunctorily that the weather records are almost the same. Anyway, it is not that the Guo army attacked Pearl Harbor, so the data does not need to be too accurate.

Ozawa, who felt good about himself, immediately smiled, paused and asked Zuo Chong how to verify hydrological data.

Hydrological data are different from weather data, such as water depth, and underwater terrain measurement requires professional equipment and a large amount of manpower and material resources are used.

There are only two of them on Oahu now, and the consulate staff are not convenient for intervening. He really couldn't think of how the other party would verify.

So he asked tentatively: "Nan Jiajun, do we want to ask Tokyo for tactical guidance?"

Tactical guidance, this little word is so Showao. Zuo Chong thought about it and shook his head again, and said lightly in the direction of the sea.

"Don't worry, the hydrological data will not change much in a short period of time. You only need to select a few key points for verification to know whether the data is accurate.

Taking the most difficult water depth and underwater terrain as an example, measure one or two points to compare horizontally with the data in the data. Don’t worry about the others for the time being, do you understand?”

Ozawa no longer had any doubts and respectfully expressed that he knew, and sighed in his heart that he was worthy of being an elite military commander, and he was more professional than those guys with special high-level courses.

In this regard, the two clarified their next action plan and division of labor, and then began their actions separately.

In the next few days, Ozawakawa bought a large number of old newspapers at a grocery store selling newspapers, thrift stores, on the grounds that it was to study the business situation on Oahu.

This kind of thing is very common in Hawaii, where the business atmosphere is strong, so it does not arouse anyone's suspicion. Even the newly recruited clerks don't care, and everything goes smoothly.

After preliminary statistics, Ozawa found that except for the hurricane season from April to November, the local weather conditions were very stable, which was good news for him and "Nan Jia".

While Ozawa was busy, Zuo Chong was not idle either.

In a fishing tackle shop run by Japanese, Zuo Chong and his boss were drinking Japanese matcha and discussing recent news about Oahu and the world.

"Nan Jiajun, have you heard that Washington will allocate 40 sealed destroyers for modernization to enrich the Atlantic Navy. Hawaii may also have a large-scale increase in troops." The owner of the fishing tackle store revealed a message with a smile.

The increase in troops means that more soldiers will come to this island in the future, and the businessman's business will be more prosperous. It is not surprising that this person shows such an expression.

"Does sealed destroyers be enabled?"

Zuo Chong put down the teacup in his hand and pondered for a moment: "The Germans swept across Western Europe, and now only Britain is left to support the battle alone. Washington naturally needs to be vigilant."

After talking about his opinion on the increase of troops, he changed his subject and quietly led the topic to business. After all, war should not be something a businessman should care about.

But the owner of the fishing tackle shop seemed to be very interested in military affairs. He stretched out his head and looked inside and outside the store. After confirming that there was no one nearby, he said mysteriously.

"Washington's actions are not only dealing with the Germans, but also guarding against Tokyo. The Red Mountain near Pearl Harbor has been hollowed out and the fuel used by warships is stored inside."

Zuo Chong was shocked. He knew that the Americans underestimated the enemy, but he did not expect that underestimation to be so.

The location of the strategic fuel oil depot is the top secret among the top secrets. Why did it be said from the mouth of a fishing tackle shop owner?

And even the other party knew it. He believed that it would not take long for the residents of Oahu to know that there is a fuel warehouse in Hongshan. It's a hell.

After a long silence, Zuo Chong expressed his purpose for this visit. He planned to rent a fishing boat through the owner of the fishing tackle store to go fishing, but in fact he conducted some hydrological data verification.

The owner of the fishing tackle shop patted his chest and made sure there was no problem. At the same time, he confidently told "Nan Jiaichiro" that he could go anywhere except the waters around Pearl Harbor.

It is not surprising that Left Heavy is not surprised. No matter how bad the Americans are, they will not let go of the Pacific Fleet's station, but this is just a small problem.

With the library's information, he only uses the data in the non-confidential area to see if there are any major changes. There is no need to risk entering the confidential area.

Seeing the action went smoothly, Zuo Chong smiled and greeted the owner of the fishing tackle shop. Suddenly, he asked curiously whether the American sailors in Pearl Harbor had bought fishing tackle in the store.

Speaking of this, the fishing tackle shop owner proudly stated that not only ordinary American Navy soldiers would buy it, but even the officers of the Pacific Fleet were his old customers, and these people often fished on the docks and in the military port to pass the time.

"Oh? Did they gain anything?"

Zuo Chong looked at the other person curiously, and seemed to have asked inadvertently, but his ears stood up.

“Mahi, very delicious fish, sweet and firm meat.”

The fishing owner replied without hesitation, and licked his lips after saying that, thinking that the taste of this kind of fish is really good.

In just a moment, the information about the mahi flashed through Zuo Chong's mind.

Mahi: Large ocean, saltwater fish, swim rapidly, generally inhabits the surface of the ocean, with an active water depth range of about 0~15 meters, strong adaptability to temperature, can tolerate low temperatures of 16℃, and is very active in the water temperature of 21~30℃.

From this clue, even if redundancy is included, the water depth inside Pearl Harbor should not exceed 15 meters at most, which is consistent with the average water depth of Pearl Harbor in the "Oahu Fishery Resources Compilation".

Zuo Chong pretended to be eager to try it out, and decided to set off early tomorrow morning with the fishing tackle shop owner to fish in a certain sea area. He spent money to buy a few sets of fishing tackle and said goodbye.

As the saying goes, poor students have a lot of stationery, no matter whether they can catch fish or not, equipment must be missing.

After returning to the sugar sugar trading company, Zuo Chuan saw that Ozawakawa was still studying the newspaper and did not disturb the other party. He returned to the room and modified the fishing gear.

He made a mark every 10 meters of the fishing line, and changed the plumb to the heaviest one, turning the fishing rod into a simple depth-shot hammer.

After dealing with these things, Zuo Chong sat on the bed and closed his eyes, silently reviewed his recent actions, and found out if there were any omissions. He sat for several hours.

Conducting intelligence activities in other countries' territory, omissions mean exposure. If they are caught by ONI, the government will never recognize his identity and must be cautious.

Early the next morning.

There was no one on the street, the dim light of street lights shone on the ground, and in the silence of everything, only the sound of the whistle of the military port in the distance floated in the air.

Zuo Chong walked out of the shop with the fishing gear on his back, heard the sound and raised his hand to look at his watch. It was just 4 o'clock, and he thought to himself that this was a good way to determine the shift schedule of the US military warship.

After thinking about it, he quickly walked towards the civil dock on Oahu, and the fishing boat was about to set off. If you fish, you must look like fishing, otherwise you would not be able to hide it from others' eyes.

When the time came to 8 o'clock in the morning, a shaking boat appeared on the sea several miles away from Oahu.

The bearded captain was lying in the captain's room with a pipe in his arms, while Zuo Chong took out a fishing rod and stood at the side of the boat and threw out the fishing line. The plumb sank into the bottom of the sea with the hook, and a string of bubbles emerged from the sea.

Ten meters.

Twenty meters.

Thirty meters

Forty meters.

The reel rotates rapidly, and the fishing lines on it continue to decrease. When the fourth mark disappears under the water, the reel stops running and sinks to the bottom!

Zuo Chong ignored the captain behind him and looked at the fishing line calmly. He roughly estimated the water depth, which was about 45 meters.

The information he stole from the library showed that there was a small trench below here, with a measured depth of 44.3 meters in 1895. Obviously, the depth has not changed much in the past forty years.

If there is no major change in even severely eroded trenches, the same should be true of the undersea terrain in Pearl Harbor.

Zuo Chong finished thinking and focused on catching fish. Unfortunately, his luck seemed to be bad. He didn't catch a single fish until the sun was three o'clock. He had to tell the captain to change his position with a dark face.

The fishing boat engine started again and drove in a certain direction.

Turning around and blew the sea breeze, the originally annoyed expression on Zuo Chong's face disappeared instantly. He didn't even put the bait just now, so he naturally couldn't catch fish, so he had to take advantage of this opportunity to walk a few more points.

For a whole day, fishing boats stayed in many waters near Oahu and slowly entered the port at sunset.

Zuo Chong got off the boat with a large bunch of sea fish, and circled around the city with great might, vividly interpreting the characteristics of the fisherman getting lost as soon as he caught a fish.

When he returned to the store, Ozawakawa took the fish from his hand and was about to say something, but he was interrupted by his shaking his head slightly. The hired clerk had not left yet, so some things were inconvenient to say.

While Ozawa was waiting anxiously, the clerk finally left. The two of them immediately came to the quiet room and exchanged the information they collected.

"Nan Jiajun, I have already discovered the meteorological laws of Oahu Island in comparison with the weather conditions in the past six months." Ozawakawa said.

Zuo Chong nodded slightly: "Well, I have also remeasured the water depth and terrain of 9 characteristic points. The result is very optimistic. I can report the weather and hydrological information of Pearl Harbor to Tokyo.

Just like last time, I sent out intelligence in the dead mailbox and contacted the intelligence officers of the consulate. In the future, we will only have one job left on Oahu, and we will do our best to collect information from the Pacific Fleet."
Chapter completed!