The ship, owned by Mitsui O.S.K. Lines and flagged in the Cayman Islands, came under attack at around 4 p.m. Somali time (UTC+3) as gunfire came from two small priate boats. The vessel, with a crew of eighteen from the Philippines, suffered light damage to its front and windows were broken. The Jasmine Ace was en-route from Sharjah, United Arab Emirates to Mombasa, Kenya. The 126.75m car carrier had loaded with 377 used cars in Sharjah on March 17.
Small boats threaten large boats.
In this case, if you have armed small boats, you can threaten boats many times your size. But you can't threaten larger craft just on size, in and of itself. For example, a single-man sailboat with nobody on board will not threaten an aircraft carrier.
( z1 threaten :ARG0 ( z2 boat :mod ( z3 small ) ) :ARG2 ( z4 boat :mod ( z5 large ) ) )