霧笛 is read as むてき (muteki) and means foghorn.
むてき
muteki
きり
spray
きりさめ
drizzle
きりふき
spraying
むちゅうしんごう
fog signal
むしゃじけん
Musha Incident (Taiwan; 1930)
むちゅう
in the fog
むか
atomization
ふえ
whistle
くちぶえ
whistle (sound made with the lips)
きてき
steam whistle
けいてき
horn
くさぶえ
reed pipe