Incandescent and halogen lights have filaments and are subject to instant failure due to shock and/or vibration. In the case of halogen bulbs, handling them with bare hands can be damaging, as oil from your skin will create a hot spot on the glass bulb, causing it to break. Access to the lights to replace bulbs can be difficult too, depending upon the size of your yacht and the light placement. So on this count, maintenance can at least be a minor nuisance and at worst a bit of a project just getting to a busted bulb. LEDs minimize this little annoyance, offering a 50,000-hour service life.