Section 155.5060 - Exercises(a) For nontank vessels with an oil capacity of 250 barrels or greater-(1) A vessel owner or operator required by § 155.5035 to have a vessel response plan (VRP) must conduct exercises as necessary to ensure that the VRP will function in an emergency. Vessel owners or operators must include both announced and unannounced exercises; and(2) A vessel owner or operator must comply with the VRP exercise requirements of 33 CFR 155.1060 .(b) For nontank vessels with an oil capacity of less than 250 barrels, a vessel owner or operator must comply with the VRP exercise requirements of paragraph (a) of this section or the Alternative Training and Exercise Program requirements of § 155.5061 .