A Bordo De :)
You could say "bienvenido abordo".
The explosion aboard the U.S.S. Maine started the Spanish American War.
you say welcome aboard I don't know why but that seems to be the case
He jumped aboard a whaling ship.
You don't say 'aboard' what... and you don't say where you are going to. Many countries prohibit the personal importation by of meat, fresh or processed.
'bienvenue à bord'
All aboard.
Most of the time they say "all aboard". Others mispronounce the 'aboard" so that it comes out "all 'board". Either way it tells passengers that have not boarded that they need to board the train as it is about to leave.
To say "welcome" to someone, you can simply use the word "welcome" itself. In a more informal context, you might say, "Hey, welcome!" or "Welcome aboard!" Additionally, in different languages, you can say "Bienvenido" in Spanish, "Bienvenue" in French, or "Willkommen" in German. The tone and context can also enhance the warmth of your greeting.
The first Spanish woman in space was Pedro Duque. He flew aboard the Space Shuttle Discovery in 1998.
Sister in law in Spanish is cunada.
Most say get on your horse, but it's more proper to say (and what hippophiles would say) mount your horse.