Answered Titanic plans - some questions

Hello all. At the beginning I note that I am from Poland and I don't know English very well. He has been interested in the Titanic for over 20 years. Recently, I started to translate plans into Polish. Unfortunately, I could not decipher the two shortcuts and I will not be able to do it without help. Namely, on the boat deck between chimney No. 1 and the bridge there is the abbreviation H.S.W.T. I don't know what he means. The next problem is on deck C in the bow section. There is a crews galley and there circle 80 G BLR. I didn't find a mention of it anywhere. Maybe someone knows something about it. Thanks in advance for every answer.
Link to plans