Adding to a listbox from another class, how?

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C#

WinForms

Okay, so I know how listboxes generally work with this example here.

private void addList_Click(object sender, EventArgs e)
{
    List<string> myList = new List<string>

    myList.Add("one");
    myList.Add("two");
    myList.Add("three... You get the picture...");

    listBox1.DataSource = myList;
}

That is all well and good and it works. However, I have another program that I am working on and cannot for the life of my figure out what I'm doing wrong. I'm trying to add to a listbox from multiple classes.

class Sailor
    {
        public int Number;

        public Sailor(int number)
        {
            this.Number = number;
        }
    }

Then

class ProSailor : Sailor
    {
        public int Age { get; set; }
        public int NoOfSailsFin { get; set; } 

        public ProSailor(int number, int age, int noOfSailsFin) : base(number)
        {
            this.Age = age;
            this.NoOfSailsFin = noOfSailsFin;
        }

So now I'm ready to populate.
In Form1.cs I have this:

private void addList_Click(object sender, EventArgs e)
        {
            List<string> _scoreboard = new List<string>();
            ProSailor sailor1 = new ProSailor(1, 24, 7);
            ProSailor sailor2 = new ProSailor(2, 23, 14);
            ProSailor sailor3 = new ProSailor(3, 20, 5);

            _scoreboard.Add(sailor1.ToString());

            listBox2.DataSource = _scoreboard;
        }

I do not get any errors, but the only think that is displayed in the listbox is:
"SailingEvent.ProSailor"

What am I doing wrong?

What I want are those numbers in the brackets to be displayed in the listbox, but I also want words around them.

e.g: "Sailor " + number + ", " + age + "years of age has, " + noOfSailsFin + " races completed!"

Please give a guy a helping hand.

Cheers!