SWAMPSCOTT – Clear skies, a strong wind and advice to “use the skills” learned in Swampscott to face the challenges of the future ushered members of the high school’s Class of 2011 through graduation and into the next stage of their lives.”Throw off the bowline. Explore, dream, discover,” Superintendent Lynne Celli urged the class. “Always remember that you are well-equipped with skills? use these skills to stand out as the individuals that you are.”One-hundred sixty students received their diplomas to the cheers and applause of friends and family who filled the bleachers and pulled up chairs on the grass during Sunday afternoon’s graduation exercises at Blocksidge Field.Student, faculty and district administration speakers alike remarked at the closeness and camaraderie among the members of the class. They attributed this to the class’ small size – typically classes have about 200 members – as well as to the class being the first group of students to spend all four years at the new high school on Essex street.In their joint address, Class President Matthew Gadman and Vice President Maggie Osbahr discussed this camaraderie as helping the class come together as a unit.Gadman described a spirit day during freshman year when the class arrived at school and had to pass a line of then-seniors chanting “07.” He then proudly noted that the class won the subsequent annual hallway decorating competition and that they have continued their “dominance” in this contest for four years.But speakers also reminded graduates that, as Class Advisor and Science Teacher Lytania Mackey said, life “won’t always be sunshine and rainbows.” Rather, there will be failure, disappointments and, most of all, a lot of hard work, she said, describing her father who spent 20 years working every day as the owner of meat store. (She also joked that her teenage job “grinding hamburger as the sun rises,” on Saturday mornings was her dad’s version of the Chemical Health Policy). But hard work and failure can lead to success, and a good sense of humor can mitigate troubled times, she said.”Learn, explore and make the best of” your failures, said Mackey. “Life is not always going to be fun, but when it can be fun, make it.”Student Speaker Nolan Surette also stressed the importance of humor and individualism in overcoming obstacles. “You do not owe anything to high school,” he said, for giving you traits and abilities. Rather, he said, an individual’s traits were given to them “in the womb.” “However, high school was valuable,” he said, because of the experiences it provided in taking these abilities and traits and developing an individual character.Class Valedictorian Marian Shtyrkov urged classmates to view challenge as an opportunity.She described a child who builds a sand castle that, ultimately, is always washed away by the tide. But now that the child is grown and “sailing off from our beloved corner of the world,” he or she “has the opportunity to build something that lasts,” Shtyrkov said.Principal Layne Millington said that he was confident that the Class of 2011 would be able to rise to such a challenge.”Every generation comes to power,” Millington said. “Based on what I’ve seen, I know the world will be a better place when this happens for the Class of 2011.”Then Student Representative to the School Committee William Travascio began reading out names as the students crossed the stage to applause, cheers and even some blasts from air horns.After the last name was read, School Committee Chair Jacqueline Kinney accepted the students as presented by Principal Millington as graduates. She asked the students to move their tassels to the left.Class Secretary Danielle Goldman closed the ceremony by describing high school as a “roller coaster.””By sticking to who we are we’ve been able to enjoy the ride,” she said. “Congratulations to the Class of 2011. Hats off.”After the ceremony, graduates posed for pictures with proud friends and families. Some graduates tried