fast – Why does my 3D model become invisible when I move the camera away?

I am trying to load a 3D model from Mixamo:

// let scene = SCNScene (called: "art.scnassets / ship.scn")!
let scene = SCNScene (called: "art.scnassets / Ch45_nonPBR.dae")!

    // create and add a camera to the scene
    let cameraNode = SCNNode() = SCNCamera()
    scene.fogStartDistance = 10000
    // place the camera
    cameraNode.position = SCNVector3(x: 0, y: 40, z: 100)

    // create and add a light to the scene
    let lightNode = SCNNode()
    lightNode.light = SCNLight()
    lightNode.light!.type = .omni
    lightNode.position = SCNVector3(x: 0, y: 50, z: 10)
    lightNode.light?.intensity = 10000;

    // create and add an ambient light to the scene
    let ambientLightNode = SCNNode()
    ambientLightNode.light = SCNLight()
    ambientLightNode.light!.type = .ambient
    ambientLightNode.light!.color = UIColor.white

    // retrieve the ship node

// let ship = scene.rootNode.childNode (withName: "ship", recursively: true)!
let ship = scene.rootNode

While the z value for the cameraNode position is 100 or less, I can see the 3D model. But if I increase the value, then the model is no longer visible. Even at 100, parts of the model are not visible.

Is this a problem with lighting or representation distance? I would like to move the camera away so I can see the whole model on the screen. At this moment I can only see a part. What do I need to change in order to see the whole model clearly like this:

enter the description of the image here

EDIT: I am using Swift 5

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