get into vs. get onto (boat)
There were two English ladies in their seventies, three boys from New Zealand and a young Canadian couple. They got into the boat. Ray wasn't there. He was late again.
Then I saw Ray. He was running towards the boat. He was wearing his white suit, and his face was red. He got onto the boat, and it went down a long way into the water. Ray's a very fat man.
В чем смысловая разница между got into the boat и got onto the boat?