In addition to an all-round white light what lights must power-driven vessels less than 65.6 feet long exhibit when underway between sunset and sunrise?

Rules of the Road
International/Inland
Lights & shapes
Rule 23-Power-driven vessels underway

(a) A power-driven vessel underway shall exhibit:
(i) a Masthead light forward;
(ii) a second masthead light abaft of and higher than the forward one; except that a vessel of less than 50 meters in length shall not be obliged to exhibit such a light but may do so;
(iii) sidelights; and
(iv) a stern light

*note on side lights. Red is port side (left) and green is starboard side (right)