All questions

• SBF Sea · Sound signals · Question 6Two short blastsWhat does the sound signal “two short blasts” mean?
• SBF Sea · Lights & shapes · Question 13Sailing vessel under engineWhich lights must a vessel under sail that is also propelled by machinery show?
• SBF Sea · Lights & shapes · Question 91Power-driven vessel under 50 mWhich vessel shows these lights?
• SBF Sea · Lights & shapes · Question 99Two balls: not under commandWhich vessel shows these shapes?