Thank you, Rick. For the quarter ended December 31, 2011, Marine Products Corporation generated net sales of $27.9 million, a 34.2% increase compared to $20.8 million in the fourth quarter of last year. This increase in net sales was due to a 37.4% increase in units sold, partially offset by a slight decrease in average selling prices per boat.
Average selling prices decreased slightly due to a shift in model mix in response to strong demand, in particular for smaller boats. For the quarter ending December 31, 2011, we reported net income of $3.6 million compared to net income of $468,000 last year. Our diluted earnings per share for this quarter were $0.10 compared to $0.01 in the prior year quarter. Net income, excluding other income for the quarter, which I will discuss more in a moment, was $1.6 million or $0.04 diluted share.
Our sales to dealers increased due to healthy dealer inventory levels going into the boat show selling season, as well as favorable indications regarding consumer demand. International sales comprised 22.1% of consolidated net sales for the fourth quarter of 2011, a decrease compared to 30.5% of consolidated net sales in last year’s fourth quarter.
For the full year of 2011, International sales decreased from 30.5% of consolidated net sales to 21.4%. In dollars, our international sales decreased by 26% in 2011 compared to 2010. Many of our international dealers are located in Western Europe, where consumer confidence is lower as a result of Europe’s current financial uncertainty.
Gross margin was 19.7% of net sales for the quarter, compared to a gross margin last year of 17.3%. Gross margin improved primarily due to higher production levels in most of our models, which led to increased production efficiencies, including leverage of fixed overhead costs. The average selling prices on our new H20s and the smaller Robalos are lower than our historical averages among all of our models. However, the high production levels of these new models have achieved one of our intended objectives, that is, to generate improved profitability.
Selling, general and administrative expenses increased by 8.3% in the fourth quarter of 2011 compared to the prior year, and were 12.3% of consolidated net sales. This increase was due to increases in incentive compensation and sales commission expenses, which vary with sales and profitability. This increase was offset, however, by lower warranty expense. Our warranty expense has improved over the past several quarters due to a favorable trend in warranty claims.
Interest income in the fourth quarter was 256,000 or 13.5% lower than the fourth quarter of 2010 due to lower market returns on our marketable securities investments, partially offset by higher marketable securities balances during the quarter. During the fourth quarter of 2011, Marine Products Corporation reported other income of $2 million, and did not have a similar item in any previously reported period.
This other income item is a non-taxable gain on a benefit plan financing arrangement for our supplemental retirement plan. We have excluded it from our discussion of net income and diluted earnings per share today because it does not relate to our operating results. Furthermore, we do not anticipate similar gains of this magnitude will occur frequently in the future.
Turning to the balance sheet. We continue to maintain a strong and liquid balance sheet with a growing cash and marketable securities balance. At the end of the fourth quarter, our cash and marketable securities balance totaled $55.1 million, a $2.7 million increase compared to last year. Compared to the third quarter of 2011, however, our cash and marketable securities balance declined by $5.9 million, partially due to a $1.8 million sequential increase in inventories. Our inventories increased because we purchased raw materials and key components to minimize the impact of annual price increases from our vendors, and to prepare for higher production volumes.
At the end of the quarter, our production levels, our order backlog, and dealer inventories reflected strong dealer demand as we enter the retail selling season. Our scheduled production is higher than at this time last year, and it supports a much higher backlog coupled with that reasonable dealer inventory level.
So with that, I'll turn it back over to Rick for a quick summary.