Nine sailors assigned to a Pearl Harbor-based destroyer have been disciplined for fraternization and various misconduct and a 10th person, an officer, remains on trial for allegedly having sex with three subordinates, the Navy confirmed yesterday.

The alleged incidents took place aboard the USS Chung Hoon between September 2004 and April 2005, the Navy said.

The 10 cases so far resolved involved five men and five women ranging in rank from seamen to lieutenant.

One case was dismissed, and in the other nine, the sailors received punishment including reduction in rank, forfeiture of pay and restriction, the Navy confirmed.

Two sailors — Lt. Bernie W. Ridgeway Jr. and Storekeeper 2nd Class Tonya Yarbrough — were court-martialed on fraternization charges, the Navy said. The sailor being court-martialed this week, Lt. Tobias Chappell, is accused of having sex with three women — one from his prior command and two from his current command, including Yarbrough, the Navy confirmed.

"The behavior of a very small number of sailors aboard Chung Hoon is not reflective of the outstanding crew and wardroom of this fine ship," said Lt. Barbara Mertz, Navy Region Hawai'i public affairs officer.

Chappell's attorney, William Sink, could not be reached for comment yesterday.

As part of a pre-trial agreement, Ridgeway was convicted Oct. 25 on two counts of fraternization and sentenced to 60 days of restriction. He will also forfeit $3,000 a month for five months and receive a reprimand.

Yarbrough also reached an agreement with prosecutors and was sentenced Aug. 2 for two incidents of unauthorized absence, disrespecting a superior officer and two counts of fraternization. The fraternization involved two supervisors, one on her current command and one at a previous command, the Navy said.

She was sentenced to six months confinement, suffered a reduction in rank, forfeiture of $750 pay per month for six months, and received a bad conduct discharge. As part of the pre-trial agreement, her confinement was limited to 90 days, and Yarbrough agreed to testify against the other party in the earlier fraternization case, the Navy said.

Chappell's general court-martial trial began Monday. He is charged with making a false statement, cruelty and maltreatment of two subordinates, theft of two government laptop computers and fraternization, the Navy confirmed.

The USS Chung Hoon's commanding officer, Cmdr. David Welch, declined comment, the Navy said.

Reach Peter Boylan at pboylan@honoluluadvertiser.com.