"go abroad (a ship)" and "go on board (a ship)"

[sunsunmoon]

Definition and pronunciation of aboard | Oxford Advanced Learners Dictionary
We went aboard.
He was already aboard the plane.
The plane crashed, killing all 157 passengers aboard.

Definition and pronunciation of board | Oxford Advanced Learners Dictionary
Have the passengers gone on board yet?

Do "go aboard (a ship)" and "go on board (a ship)" mean exactly the same meaning?

 

[5jj]

Do "go abroad (a ship)" and "go on board (a ship)" mean exactly the same meaning?

Yes

 

[sunsunmoon]

Thank you, fivejedjon. I've just corrected my typo.

- get on a ship/train/plane
- get aboard a ship/train/plane
- get on board a ship/train/plane
These mean the same thing, though the first phrase is more common than the others, don't they?

 

[probus]

I think you are correct that get on is the commonest form.

In your second case go aboard can substitute for get aboard.

 

[Barb_D]

You also simple "board."

Your flight is now boarding.