Assertion: blue light | /r/HasProperty | the beam
Facets:
Source sentences:
text: In general sailing vessels are required to carry a green light that shines from dead ahead to 2 points (​22 1⁄ 2 °) abaft[note 1] the beam on the starboard side (the right side from the perspective of someone on board facing forward), a red light from dead ahead to two points abaft the beam on the port side (left side) and a white light that shines from astern to two points abaft the beam on both sides.